CVE-2026-59938

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 78% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 4 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with declared image size values that are much too large compared to the actual data, causing large memory usage in pypdf image parsing. This issue is fixed in version 6.14.0.

CVSS v3
5.3
EG Score
5.3(medium)
EPSS
22.1%
KEV
Not listed

Published

July 8, 2026

Last Modified

July 9, 2026

Advisory Details (4)

Auto-updated Jul 8, 2026
Patch available. Sources: github_pr, github_release, github, github_commit.
github Patch Available

Possible large memory usage for wrong image dimensions · Advisory · py-pdf/pypdf · GitHub

https://github.com/py-pdf/pypdf/security/advisories/GHSA-5qjq-93h5-hrgp
github_release Patch Available

Version 6.14.0, 2026-06-22

Patch available: py-pdf/pypdf 6.14.0

https://github.com/py-pdf/pypdf/releases/tag/6.14.0
github_pr Patch Available

SEC: Apply general limit for requested image size

Patch available: py-pdf/pypdf 6.14.0 (PR #3888 merged 2026-06-22)

https://github.com/py-pdf/pypdf/pull/3888
github_commit Patch Available

commit c64583be16b8 (py-pdf/pypdf)

Patch available: py-pdf/pypdf 6.14.0 (contains commit c64583be16b8)

https://github.com/py-pdf/pypdf/commit/c64583be16b8e8763d8777075f8ecbf382014b7a

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 10× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 15:35 UTCEG score recompute
  2. 2026-07-11 08:27 UTCEPSS rescore
  3. 2026-07-11 08:27 UTCEPSS rescore
  4. 2026-07-10 16:15 UTCEG score recompute▼ 1.60
  5. 2026-07-09 21:46 UTCNVD updateCVSS v3 → 5.3
  6. 2026-07-09 19:10 UTCEPSS rescore
  7. 2026-07-09 19:10 UTCEPSS rescore
  8. 2026-07-09 16:51 UTCEG score recompute
  9. 2026-07-08 17:29 UTCEG score recompute
  10. 2026-07-08 17:29 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-59938?
CVE-2026-59938 is a medium vulnerability published on July 8, 2026. pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with declared image size values that are much too large compared to the actual data, causing large memory usage in pypdf image parsing. This issue is fixed in version 6.14.0.
When was CVE-2026-59938 disclosed?
CVE-2026-59938 was first published in the National Vulnerability Database on July 8, 2026, with the most recent update on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59938 actively exploited?
CVE-2026-59938 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-59938?
CVE-2026-59938 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-59938?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59938, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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