CVE-2026-27628
unknown
CVSS v3
—
CVSS v4 NEW
—
VIR risk
—
Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.7.2, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires reading the file. This has been fixed in pypdf 6.7.2. As a workaround, one may apply the patch manually.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Mixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Affected | — |
| sid | Fixed | 6.9.0-1 |
| forky | Fixed | 6.9.0-1 |
| bullseye | Affected | — |
| bookworm | Affected | — |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | pypdf | <6.7.2 | 6.7.2 |
References
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-2rw7-x74f-jg35
- https://nvd.nist.gov/vuln/detail/CVE-2026-27628
- https://github.com/py-pdf/pypdf/issues/3654
- https://github.com/py-pdf/pypdf/commit/f0a462d36971cf077d74492a348d0d06fd60ea4d
- https://github.com/py-pdf/pypdf
- https://security-tracker.debian.org/tracker/CVE-2026-27628
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.