CVE-2026-59941

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 58% 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
Elevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

Dompdf is an HTML to PDF converter for PHP. Versions 3.15 and prior accept a BMP image and generates a PDF-compatible PNG based only on its declared header dimensions and never bounds width × height before the image is converted through GD. A 58-byte BMP whose header declares e.g. 6000×6000 is accepted and later drives imagecreatetruecolor($width, $height) (and PHP's native BMP decoder) to allocate the full pixel canvas. A payload can fit in a single HTTP request: the BMP can be inlined as a data:image/bmp;base64,… URI inside attacker-controlled HTML, so no upload, no remote fetch, and no chroot-reachable file is required. I measured a 169-byte request driving a dompdf render to ~412 MB peak RSS and ~4.8 s of CPU/wall time, versus ~34 MB for an identically-sized benign request — roughly a 12× memory amplification per request, repeatable and unauthenticated. This issue has been fixed in version 3.16.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: Track

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
Severity75% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

July 22, 2026

Last Modified

August 4, 2026

Advisory Details (3)

Auto-updated Jul 28, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

Dompdf 3.1.6

Patch available: dompdf/dompdf v3.1.6

https://github.com/dompdf/dompdf/releases/tag/v3.1.6
github_commit Patch Available

commit 7c65e7bbeccf (dompdf/dompdf)

Patch available: dompdf/dompdf v3.1.6 (contains commit 7c65e7bbeccf)

https://github.com/dompdf/dompdf/commit/7c65e7bbeccf146b2409740405af73949ad129d0
github Patch Available🟡 PoC Available

Uncontrolled resource consumption based on declared BMP dimensions · Advisory · dompdf/dompdf · GitHub

https://github.com/dompdf/dompdf/security/advisories/GHSA-8hg6-c449-896m

Vendor Advisories for CVE-2026-59941(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
php-dompdf0.6.2+dfsg-3.1 ... 3.1.4+dfsg-2 (19 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
php-dompdf2.0.3+dfsg-1 ... 3.1.4+dfsg-2 (15 versions)——
Packagist(1)
PackageVulnerable rangeFixed inDependents
dompdf/dompdfv0.6.0 ... v3.1.5 (39 versions)3.1.6—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 48× 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. 2026-09-15 03:11 UTCEPSS rescore
  2. 2026-09-14 02:03 UTCEG score recompute
  3. 2026-09-13 16:47 UTCEPSS rescore
  4. 2026-09-13 01:21 UTCEG score recompute
  5. 2026-09-11 21:56 UTCEG score recompute
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-10 21:14 UTCEG score recompute
  8. 2026-09-10 09:35 UTCEPSS rescore
  9. 2026-09-09 09:11 UTCEG score recompute
  10. 2026-09-08 22:01 UTCEPSS rescore
  11. 2026-09-07 21:39 UTCEG score recompute
  12. 2026-09-07 16:01 UTCEPSS rescore
  13. 2026-09-06 13:47 UTCEPSS rescore
  14. 2026-09-05 19:33 UTCEG score recompute
  15. 2026-09-05 07:06 UTCEG score recompute
  16. 2026-09-04 13:39 UTCEG score recompute
  17. 2026-09-04 05:07 UTCEPSS rescore
  18. 2026-09-02 14:12 UTCEPSS rescore
  19. 2026-09-01 23:36 UTCEG score recompute
  20. 2026-09-01 13:54 UTCEPSS rescore
  21. 2026-09-01 04:40 UTCEPSS rescore
  22. 2026-08-31 01:32 UTCEG score recompute
  23. 2026-08-30 19:17 UTCEPSS rescore
  24. 2026-08-30 13:11 UTCEG score recompute
  25. 2026-08-30 01:22 UTCEPSS rescore
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  1. 2026-08-30 00:50 UTCEG score recompute
  2. 2026-08-28 21:42 UTCEPSS rescore
  3. 2026-08-27 14:30 UTCEG score recompute
  4. 2026-08-27 14:25 UTCEPSS rescore
  5. 2026-08-27 02:00 UTCEG score recompute
  6. 2026-08-26 14:46 UTCEPSS rescore
  7. 2026-08-26 01:18 UTCEG score recompute
  8. 2026-08-25 13:49 UTCEPSS rescore
  9. 2026-08-25 00:31 UTCEG score recompute
  10. 2026-08-24 12:10 UTCEG score recompute
  11. 2026-08-23 11:17 UTCEG score recompute
  12. 2026-08-23 00:19 UTCEPSS rescore
  13. 2026-08-22 10:36 UTCEG score recompute
  14. 2026-08-21 23:49 UTCEPSS rescore
  15. 2026-08-21 09:45 UTCEG score recompute
  16. 2026-08-20 22:55 UTCEPSS rescore
  17. 2026-08-19 20:42 UTCEG score recompute
  18. 2026-08-19 17:04 UTCEPSS rescore
  19. 2026-08-18 19:09 UTCEG score recompute
  20. 2026-08-18 13:48 UTCEPSS rescore
  21. 2026-08-18 01:54 UTCEG score recompute
  22. 2026-08-17 13:47 UTCEPSS rescore
  23. 2026-08-17 01:12 UTCEG score recompute
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 12:51 UTCEG score recompute
  26. 2026-08-16 02:14 UTCEPSS rescore
  27. 2026-08-15 12:09 UTCEG score recompute
  28. 2026-08-15 01:30 UTCEPSS rescore
  29. 2026-08-13 23:06 UTCEG score recompute
  30. 2026-08-13 22:00 UTCEPSS rescore
  31. 2026-08-12 22:25 UTCEG score recompute
  32. 2026-08-12 13:51 UTCEPSS rescore
  33. 2026-08-11 21:43 UTCEG score recompute
  34. 2026-08-11 09:22 UTCEG score recompute
  35. 2026-08-11 00:00 UTCEPSS rescore
  36. 2026-08-09 20:19 UTCEG score recompute
  37. 2026-08-09 13:46 UTCEPSS rescore
  38. 2026-08-08 19:38 UTCEG score recompute
  39. 2026-08-08 16:37 UTCEPSS rescore
  40. 2026-08-07 18:56 UTCEG score recompute
  41. 2026-08-06 18:14 UTCEG score recompute
  42. 2026-08-06 13:47 UTCEPSS rescore
  43. 2026-08-06 05:53 UTCEG score recompute
  44. 2026-08-05 19:17 UTCEPSS rescore
  45. 2026-08-04 16:48 UTCEG score recompute▲ 1.20
  46. 2026-08-04 16:47 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  47. 2026-08-04 15:10 UTCEPSS rescore
  48. 2026-08-04 14:59 UTCEG score recompute
  49. 2026-08-04 10:39 UTCEPSS rescore
  50. 2026-08-03 15:21 UTCEG score recompute
  51. 2026-08-03 10:36 UTCEPSS rescore
  52. 2026-08-02 15:43 UTCEG score recompute
  53. 2026-08-02 02:27 UTCEPSS rescore
  54. 2026-08-01 16:06 UTCEG score recompute
  55. 2026-08-01 04:16 UTCEPSS rescore
  56. 2026-07-30 16:46 UTCEG score recompute
  57. 2026-07-30 16:28 UTCEPSS rescore
  58. 2026-07-30 13:00 UTCEG score recompute
  59. 2026-07-30 01:30 UTCEPSS rescore
  60. 2026-07-30 01:30 UTCEPSS rescore
  61. 2026-07-29 13:19 UTCEG score recompute
  62. 2026-07-28 21:26 UTCEG score recompute
  63. 2026-07-28 21:02 UTCEG score recompute▲ 6.30
  64. 2026-07-28 21:02 UTCMITRE cvelistV5CVSS v3 → 6.3 · CVSS v4 → 6.3
  65. 2026-07-23 03:21 UTCEG score recompute
  66. 2026-07-22 23:22 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-59941?
CVE-2026-59941 is a high vulnerability published on July 22, 2026. Dompdf is an HTML to PDF converter for PHP. Versions 3.15 and prior accept a BMP image and generates a PDF-compatible PNG based only on its declared header dimensions and never bounds width × height before the image is converted through GD. A 58-byte BMP whose header declares e.g. 6000×6000 is…
When was CVE-2026-59941 disclosed?
CVE-2026-59941 was first published in the National Vulnerability Database on July 22, 2026, with the most recent update on August 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59941 actively exploited?
CVE-2026-59941 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.9% of all scored CVEs.
What is the CVSS score of CVE-2026-59941?
CVE-2026-59941 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-59941?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59941, 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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