Vulnerability in Tinytag
CVE-2026-32889
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- Tinytag — versions 2.2.0, >= 2.2.0, < 2.2.1
Weakness classification (CWE)
References
- github.com/tinytag/tinytag/security/advisories/GHSA-f4rq-2259-hv29 (Exploit, Patch, Vendor Advisory)
- github.com/tinytag/tinytag/commit/44e496310f7ced8077e9087e3774acbaa324b18a (Patch)
- github.com/tinytag/tinytag/commit/4d649b9c314ada8ff8a74e0469e9aadb3acb252a (Patch)
- github.com/tinytag/tinytag/commit/5cd321521ff097e41724b601d7e3d7adc7e53402 (Patch)
Frequently asked questions
- What is CVE-2026-32889?
- CVE-2026-32889 is a medium-severity vulnerability in Tinytag, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 6.5/10. Published 2026-03-20.
- How severe is CVE-2026-32889?
- Medium severity. CVSS v3 base score is 6.5 out of 10.