CVE-2026-56722

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 75% 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
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: 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. In versions 3.15 and prior, aAn attacker who controls the HTML input can bypass this restriction by embedding a target file path inside an SVG image delivered through a  data:  URI, because dompdf processes the SVG twice and the second pass does not enforce the same protections as the first. When rendering, dompdf hands the SVG to the separate  php-svg-lib  library with external references forced on, and that library has no knowledge of the chroot directory, blocks only the  phar://  scheme, and ultimately reads the referenced file with no path or protocol validation. This lets an external, unauthenticated attacker read arbitrary image files from the server's file system in the default configuration. This issue has been fixed in version 3.16.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
55(Attend)
EG Risk 55/100SSVC: Attend

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%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

July 22, 2026

Last Modified

August 4, 2026

Advisory Details (4)

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 bf7b02f642e2 (dompdf/dompdf)

Patch available: dompdf/dompdf v3.1.6 (contains commit bf7b02f642e2)

https://github.com/dompdf/dompdf/commit/bf7b02f642e26007dedc5a22b3d6e15f9931120a
github_commit Patch Available

commit 6a58996865db (dompdf/dompdf)

Patch available: dompdf/dompdf v3.1.6 (contains commit 6a58996865db)

https://github.com/dompdf/dompdf/commit/6a58996865db05d8fede748507e50ac4b8c5bfd0
github Patch Available🟡 PoC Available

Local file read due to improper file path validation in SVG images encoded as data-URI · Advisory · dompdf/dompdf · GitHub

https://github.com/dompdf/dompdf/security/advisories/GHSA-cx96-42px-69fm

Vendor Advisories for CVE-2026-56722(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 11× in last 7d / 54× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-30 00:51 UTCEG score recompute
  3. 2026-08-28 21:42 UTCEPSS rescore
  4. 2026-08-27 14:25 UTCEPSS rescore
  5. 2026-08-27 10:16 UTCEG score recompute
  6. 2026-08-26 14:46 UTCEPSS rescore
  7. 2026-08-26 10:42 UTCEG score recompute
  8. 2026-08-25 13:49 UTCEPSS rescore
  9. 2026-08-25 11:26 UTCEG score recompute
  10. 2026-08-24 13:44 UTCEG score recompute
  11. 2026-08-23 16:04 UTCEG score recompute
  12. 2026-08-23 00:19 UTCEPSS rescore
  13. 2026-08-22 18:24 UTCEG score recompute
  14. 2026-08-21 23:49 UTCEPSS rescore
  15. 2026-08-20 23:04 UTCEG score recompute
  16. 2026-08-20 22:55 UTCEPSS rescore
  17. 2026-08-20 01:23 UTCEG score recompute
  18. 2026-08-19 17:04 UTCEPSS rescore
  19. 2026-08-19 03:42 UTCEG score recompute
  20. 2026-08-18 13:48 UTCEPSS rescore
  21. 2026-08-18 06:02 UTCEG score recompute
  22. 2026-08-17 13:47 UTCEPSS rescore
  23. 2026-08-17 08:21 UTCEG score recompute
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 10:41 UTCEG score recompute
Show 41 more
  1. 2026-08-16 02:14 UTCEPSS rescore
  2. 2026-08-15 13:02 UTCEG score recompute
  3. 2026-08-15 01:30 UTCEPSS rescore
  4. 2026-08-14 15:21 UTCEG score recompute
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-12 19:51 UTCEG score recompute
  7. 2026-08-12 13:51 UTCEPSS rescore
  8. 2026-08-11 22:11 UTCEG score recompute
  9. 2026-08-11 00:28 UTCEG score recompute
  10. 2026-08-11 00:00 UTCEPSS rescore
  11. 2026-08-10 02:48 UTCEG score recompute
  12. 2026-08-09 13:46 UTCEPSS rescore
  13. 2026-08-09 05:09 UTCEG score recompute
  14. 2026-08-08 16:37 UTCEPSS rescore
  15. 2026-08-08 07:29 UTCEG score recompute
  16. 2026-08-07 09:49 UTCEG score recompute
  17. 2026-08-06 13:47 UTCEPSS rescore
  18. 2026-08-06 12:09 UTCEG score recompute
  19. 2026-08-05 19:17 UTCEPSS rescore
  20. 2026-08-04 16:48 UTCEG score recompute▼ 1.00
  21. 2026-08-04 16:47 UTCNVD updateCVSS v3 → 5.3
  22. 2026-08-04 15:10 UTCEPSS rescore
  23. 2026-08-04 10:39 UTCEPSS rescore
  24. 2026-08-04 05:11 UTCEG score recompute
  25. 2026-08-03 10:36 UTCEPSS rescore
  26. 2026-08-02 09:49 UTCEG score recompute
  27. 2026-08-02 02:27 UTCEPSS rescore
  28. 2026-08-01 12:09 UTCEG score recompute
  29. 2026-08-01 04:16 UTCEPSS rescore
  30. 2026-07-30 16:47 UTCEG score recompute
  31. 2026-07-30 16:28 UTCEPSS rescore
  32. 2026-07-30 13:05 UTCEG score recompute
  33. 2026-07-30 01:30 UTCEPSS rescore
  34. 2026-07-30 01:30 UTCEPSS rescore
  35. 2026-07-29 15:24 UTCEG score recompute
  36. 2026-07-29 14:49 UTCEG score recompute
  37. 2026-07-28 21:26 UTCEG score recompute
  38. 2026-07-28 20:39 UTCEG score recompute▲ 6.30
  39. 2026-07-28 20:37 UTCMITRE cvelistV5CVSS v3 → 6.3 · CVSS v4 → 6.3
  40. 2026-07-23 03:20 UTCEG score recompute
  41. 2026-07-22 22:27 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56722?
CVE-2026-56722 is a medium vulnerability published on July 22, 2026. Dompdf is an HTML to PDF converter for PHP. In versions 3.15 and prior, aAn attacker who controls the HTML input can bypass this restriction by embedding a target file path inside an SVG image delivered through a data: URI, because dompdf processes the SVG twice and the second pass does not enforce…
When was CVE-2026-56722 disclosed?
CVE-2026-56722 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-2026-56722 actively exploited?
CVE-2026-56722 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 74.6% of all scored CVEs.
What is the CVSS score of CVE-2026-56722?
CVE-2026-56722 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-56722?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56722, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-56722

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