PatchTheCVECVE-2026-119208: pypdf is a free and open-source pure-python PDF library
CVE-2026-119208 is a medium-severity flaw (CVSS 5.5) affecting pypdf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive time and memory when an application accesses the page count of a crafted encrypted PDF whose page tree declares a forged /Count value. Even after successful decryption, page-count retrieval trusts the unvalidated declared count instead of walking the page tree, allowing the attacker-controlled value to drive excessive work and memory use. This is
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.5 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.3% (top 77%) |
| CISA exploited list | No |
| Weakness | CWE-400 |
| Published | 2026-10-29 |
| Last modified | 2026-11-02 |
Last updated 2026-11-02 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Advisories and coverage
Research and news
- Vulners Bulletins: CVE-2026-119208 vulnerabilities 2026-10-31
- Vulners Bulletins: CVE-2026-119208 2026-10-30
- VulDB Recent Entries: CVE-2026-119208 | py-pdf pypdf up to 6.21.2 resource consumption 2026-10-29
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-119208?
pypdf: upgrade to 6.21.3. Exact commands for each OS are on this page.
Is CVE-2026-119208 being exploited?
CVE-2026-119208 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-119208 affect?
CVE-2026-119208 affects pypdf. Severity is medium (CVSS 5.5). pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive time and memory when an application accesses the page count of a crafted encrypted PDF whose page tree declares a forged /Count value. Eve
How urgent is CVE-2026-119208?
Priority 25/100. No elevated risk signals yet.
Software pages
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