VDB
CVE-2026-28351
CVE-2026-28351
PUBLISHED
CVSS 6.900000095367432 MEDIUM
pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.4, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream using the RunLengthDecode filter. This has been fixed in pypdf 6.7.4. As a workaround, consider applying the changes from PR #3664.
EPSS 0.02% · 5.4th percentile
Risk Scores
CVSS 4.0
6.900000095367432
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
EPSS Score
0.02%
5.4th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| py-pdf | pypdf | < 6.7.4, < 6.7.4, * |
| pypdf_project | pypdf | 0, 0, 0 |
| PyPI | pypdf | 0, 0, 0 |
Exploit Intelligence
- CIRCL seen: CVE-2026-28351 (circl-sighting)
- CIRCL seen: CVE-2026-28351 (circl-sighting)
- CIRCL seen: CVE-2026-28351 (circl-sighting)
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-f2v5-7jq9-h8cg (circl)
- https://github.com/py-pdf/pypdf/pull/3664 (circl)
- https://github.com/py-pdf/pypdf/commit/f309c6003746414dc7b5048c19e6d879ff2dc858 (circl)
- https://github.com/py-pdf/pypdf/releases/tag/6.7.4 (circl)
Timeline
- Feb 26, 2026 CVE ID Reserved
- Feb 27, 2026 CVE Published
- Feb 27, 2026 PoC Published
- Feb 28, 2026 EPSS Score
- Feb 28, 2026 PoC Published
- Feb 28, 2026 PoC Published
- Mar 1, 2026 EPSS Score
- Mar 3, 2026 EPSS Score
- Mar 3, 2026 CVE Updated
- Mar 4, 2026 EPSS Score
- Mar 6, 2026 EPSS Score
- Mar 7, 2026 EPSS Score
References
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-f2v5-7jq9-h8cg url
- https://github.com/py-pdf/pypdf/pull/3664 url
- https://github.com/py-pdf/pypdf/commit/f309c6003746414dc7b5048c19e6d879ff2dc858 url
- https://github.com/py-pdf/pypdf/releases/tag/6.7.4 url
- https://nvd.nist.gov/vuln/detail/CVE-2026-28351 advisory
- https://github.com/py-pdf/pypdf package
- https://www.ibm.com/support/pages/node/7268602 advisory
- https://www.ibm.com/support/pages/node/7268724 advisory
- https://www.ibm.com/support/pages/node/7268726 advisory
- https://www.ibm.com/support/pages/node/7268604 advisory
- https://www.ibm.com/support/pages/node/7268649 advisory
- https://www.ibm.com/support/pages/node/7268725 advisory
- https://advisory.splunk.com/advisories/SVD-2026-0512 advisory
- https://advisory.splunk.com/advisories/SVD-2026-0513 advisory
- https://advisory.splunk.com/advisories/SVD-2026-0509 advisory
- https://advisory.splunk.com/advisories/SVD-2026-0510 advisory
- https://advisory.splunk.com/advisories/SVD-2026-0505 advisory
- https://advisory.splunk.com/advisories/SVD-2026-0515 advisory
- https://advisory.splunk.com/advisories/SVD-2026-0507 advisory
- https://advisory.splunk.com/advisories/SVD-2026-0506 advisory
…and 8 more