CVE-2026-59938

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.5% (41st percentile of EPSS-scored CVEs). 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
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
5.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
42nd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

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.
githubMentions a patch (unverified)

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

Vendor Advisories for CVE-2026-59938(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(6 across 5 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
pypdf3.17.4-1 ... 6.9.2-2 (15 versions)
  • every version on: no fix on record
—
pypdf22.12.1-3, 2.12.1-3+deb12u1, 2.12.1-4
  • every version on: no fix on record
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
pypdf21.26.0-4 ... 2.9.0-1 (24 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
pypdf5.4.0-1, 6.19.0-1, 6.9.0-1, 6.9.2-1, 6.9.2-2
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
pypdf5.4.0-1, 6.9.0-1, 6.9.2-1, 6.9.2-2
  • every version up to 6.19.0-1: fixed in 6.19.0-1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
pypdf1.0 ... 6.9.2 (109 versions)
  • every version up to 6.14.0: fixed in 6.14.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 33× 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.

Showing the most recent 100 of 139 total refreshes for this CVE.

  1. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-09 20:07 UTCEPSS rescore
  3. 2026-10-08 17:13 UTCEPSS rescore
  4. 2026-10-07 23:48 UTCEPSS rescore
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  9. 2026-10-02 17:56 UTCEPSS rescore
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  11. 2026-10-01 16:11 UTCEG score recompute
  12. 2026-09-30 15:03 UTCEPSS rescore
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  15. 2026-09-28 13:22 UTCEG score recompute
  16. 2026-09-27 13:48 UTCEPSS rescore
  17. 2026-09-26 15:59 UTCEPSS rescore
  18. 2026-09-24 14:04 UTCEPSS rescore
  19. 2026-09-24 11:48 UTCEG score recompute
  20. 2026-09-23 17:54 UTCEPSS rescore
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  22. 2026-09-20 20:16 UTCEPSS rescore
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  24. 2026-09-18 05:43 UTCEG score recompute
  25. 2026-09-17 19:31 UTCEPSS rescore
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  1. 2026-09-16 14:08 UTCEPSS rescore
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  5. 2026-09-13 16:47 UTCEPSS rescore
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  7. 2026-09-12 03:34 UTCEG score recompute
  8. 2026-09-11 14:53 UTCEPSS rescore
  9. 2026-09-10 09:35 UTCEPSS rescore
  10. 2026-09-08 22:01 UTCEPSS rescore
  11. 2026-09-07 16:01 UTCEPSS rescore
  12. 2026-09-06 13:47 UTCEPSS rescore
  13. 2026-09-05 22:47 UTCEG score recompute
  14. 2026-09-04 05:07 UTCEPSS rescore
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  18. 2026-08-30 19:17 UTCEPSS rescore
  19. 2026-08-30 07:30 UTCEG score recompute
  20. 2026-08-30 01:22 UTCEPSS rescore
  21. 2026-08-28 21:42 UTCEPSS rescore
  22. 2026-08-27 21:50 UTCEG score recompute
  23. 2026-08-27 14:25 UTCEPSS rescore
  24. 2026-08-26 14:46 UTCEPSS rescore
  25. 2026-08-26 08:23 UTCEG score recompute
  26. 2026-08-25 13:49 UTCEPSS rescore
  27. 2026-08-24 22:45 UTCEG score recompute
  28. 2026-08-23 23:23 UTCEG score recompute
  29. 2026-08-23 00:19 UTCEPSS rescore
  30. 2026-08-22 00:42 UTCEG score recompute
  31. 2026-08-21 23:49 UTCEPSS rescore
  32. 2026-08-21 01:20 UTCEG score recompute
  33. 2026-08-20 22:55 UTCEPSS rescore
  34. 2026-08-20 01:59 UTCEG score recompute
  35. 2026-08-19 17:04 UTCEPSS rescore
  36. 2026-08-18 22:33 UTCEG score recompute
  37. 2026-08-18 13:48 UTCEPSS rescore
  38. 2026-08-17 23:13 UTCEG score recompute
  39. 2026-08-17 13:47 UTCEPSS rescore
  40. 2026-08-16 23:51 UTCEG score recompute
  41. 2026-08-16 14:56 UTCEPSS rescore
  42. 2026-08-16 02:14 UTCEPSS rescore
  43. 2026-08-16 00:30 UTCEG score recompute
  44. 2026-08-15 01:30 UTCEPSS rescore
  45. 2026-08-14 01:49 UTCEG score recompute
  46. 2026-08-13 22:00 UTCEPSS rescore
  47. 2026-08-13 02:28 UTCEG score recompute
  48. 2026-08-12 13:51 UTCEPSS rescore
  49. 2026-08-12 03:08 UTCEG score recompute
  50. 2026-08-11 03:47 UTCEG score recompute
  51. 2026-08-11 00:00 UTCEPSS rescore
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  53. 2026-08-09 13:46 UTCEPSS rescore
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  55. 2026-08-08 16:37 UTCEPSS rescore
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  58. 2026-08-06 13:47 UTCEPSS rescore
  59. 2026-08-06 07:04 UTCEG score recompute
  60. 2026-08-05 19:17 UTCEPSS rescore
  61. 2026-08-05 07:43 UTCEG score recompute
  62. 2026-08-04 15:10 UTCEPSS rescore
  63. 2026-08-04 10:39 UTCEPSS rescore
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  65. 2026-08-03 10:36 UTCEPSS rescore
  66. 2026-08-02 09:08 UTCEG score recompute
  67. 2026-08-02 02:27 UTCEPSS rescore
  68. 2026-08-01 09:47 UTCEG score recompute
  69. 2026-08-01 04:16 UTCEPSS rescore
  70. 2026-07-31 10:26 UTCEG score recompute
  71. 2026-07-30 16:28 UTCEPSS rescore
  72. 2026-07-30 11:05 UTCEG score recompute
  73. 2026-07-30 01:30 UTCEPSS rescore
  74. 2026-07-30 01:30 UTCEPSS rescore
  75. 2026-07-29 11:44 UTCEG score recompute

Related CVEs(same product + same CWE)

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 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 0.5% probability of exploitation in the next 30 days (42nd percentile of EPSS-scored CVEs).
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?
A fix for CVE-2026-59938 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-59938 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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