CVE-2026-76203

MEDIUMPre-NVD 5.15.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.1 under a secondary CVSS source (NVD's own analysis pending). 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, secondary
Trending — 3 sources updated this week
5.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.1Exploit: None knownExposed: 0

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

Incorrect Behavior Order: Validate Before Canonicalize in the report theme CSS sanitizer in maalfer Pentestify 1.2.0 through 2.3.2 allows an authenticated user to force outbound HTTP requests from other users' browsers, disclosing their IP address and User-Agent, via CSS hex escapes that reconstruct the url() function and evade the sanitizer blocklist

CVSS v3
5.1
EG Score
5.1(medium)
EG Risk
23(Track)
EG Risk 23/100SSVC: 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
Severity51% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

August 19, 2026

Last Modified

September 1, 2026

Advisory Details (2)

Auto-updated Aug 19, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

CVE-2026-76203 · CSS sanitizer bypass in Pentestify report themes allows forced outbound requests from users' browsers | Vulnerabilities published by Secur0

https://secur0.com/en/cna/cve-list/cve-2026-76203-css-sanitizer-bypass-pentestify-report-themes
github_commit

commit 1ed1aadadb02 (ccyl13/Pentestify)

Fix landed in ccyl13/Pentestify commit 1ed1aadadb02 — awaiting tagged release

https://github.com/ccyl13/Pentestify/commit/1ed1aadadb02e959af470aac9958462048f7f5f5

Vendor Advisories for CVE-2026-76203(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 86× 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. 2026-09-18 21:45 UTCEG score recompute
  2. 2026-09-18 21:45 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-17 21:33 UTCEG score recompute
  5. 2026-09-17 21:33 UTCGHSA enrichment
  6. 2026-09-16 21:48 UTCEG score recompute
  7. 2026-09-16 21:48 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-15 21:11 UTCEG score recompute
  11. 2026-09-15 21:11 UTCGHSA enrichment
  12. 2026-09-15 03:12 UTCEPSS rescore
  13. 2026-09-14 21:55 UTCGHSA enrichment
  14. 2026-09-13 22:40 UTCEG score recompute
  15. 2026-09-13 22:40 UTCGHSA enrichment
  16. 2026-09-12 23:29 UTCEG score recompute
  17. 2026-09-12 23:29 UTCGHSA enrichment
  18. 2026-09-12 15:02 UTCEPSS rescore
  19. 2026-09-12 00:17 UTCEG score recompute
  20. 2026-09-12 00:17 UTCGHSA enrichment
  21. 2026-09-11 14:53 UTCEPSS rescore
  22. 2026-09-11 01:05 UTCEG score recompute
  23. 2026-09-11 01:05 UTCGHSA enrichment
  24. 2026-09-10 09:35 UTCEPSS rescore
  25. 2026-09-10 01:53 UTCGHSA enrichment
Show 64 more
  1. 2026-09-09 02:39 UTCEG score recompute
  2. 2026-09-09 02:39 UTCGHSA enrichment
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-07 18:53 UTCEG score recompute
  5. 2026-09-07 18:53 UTCGHSA enrichment
  6. 2026-09-06 19:42 UTCEG score recompute
  7. 2026-09-06 19:42 UTCGHSA enrichment
  8. 2026-09-06 13:48 UTCEPSS rescore
  9. 2026-09-05 20:27 UTCEG score recompute
  10. 2026-09-05 20:27 UTCGHSA enrichment
  11. 2026-09-04 21:16 UTCEG score recompute
  12. 2026-09-04 21:15 UTCGHSA enrichment
  13. 2026-09-04 05:07 UTCEPSS rescore
  14. 2026-09-03 20:31 UTCGHSA enrichment
  15. 2026-09-02 21:19 UTCEG score recompute
  16. 2026-09-02 21:19 UTCGHSA enrichment
  17. 2026-09-02 14:12 UTCEPSS rescore
  18. 2026-09-01 21:03 UTCEG score recompute
  19. 2026-09-01 21:03 UTCGHSA enrichment
  20. 2026-09-01 13:54 UTCEPSS rescore
  21. 2026-09-01 08:42 UTCEG score recompute
  22. 2026-09-01 08:42 UTCGHSA enrichment
  23. 2026-09-01 04:40 UTCEPSS rescore
  24. 2026-09-01 04:40 UTCEPSS rescore
  25. 2026-08-31 09:29 UTCEG score recompute
  26. 2026-08-31 09:29 UTCGHSA enrichment
  27. 2026-08-30 19:18 UTCEPSS rescore
  28. 2026-08-30 19:17 UTCEPSS rescore
  29. 2026-08-30 10:14 UTCEG score recompute
  30. 2026-08-30 10:14 UTCGHSA enrichment
  31. 2026-08-30 01:22 UTCEPSS rescore
  32. 2026-08-29 11:02 UTCEG score recompute
  33. 2026-08-29 11:02 UTCGHSA enrichment
  34. 2026-08-28 21:42 UTCEPSS rescore
  35. 2026-08-28 11:51 UTCEG score recompute
  36. 2026-08-28 11:51 UTCGHSA enrichment
  37. 2026-08-27 14:25 UTCEPSS rescore
  38. 2026-08-27 12:39 UTCEG score recompute
  39. 2026-08-27 12:39 UTCGHSA enrichment
  40. 2026-08-26 14:47 UTCEPSS rescore
  41. 2026-08-26 13:27 UTCGHSA enrichment
  42. 2026-08-25 14:11 UTCEG score recompute
  43. 2026-08-25 14:10 UTCGHSA enrichment
  44. 2026-08-25 13:49 UTCEPSS rescore
  45. 2026-08-24 14:57 UTCEG score recompute
  46. 2026-08-24 14:56 UTCGHSA enrichment
  47. 2026-08-24 14:18 UTCEPSS rescore
  48. 2026-08-23 15:45 UTCEG score recompute
  49. 2026-08-23 15:45 UTCGHSA enrichment
  50. 2026-08-23 00:19 UTCEPSS rescore
  51. 2026-08-22 16:34 UTCEG score recompute
  52. 2026-08-22 16:34 UTCGHSA enrichment
  53. 2026-08-21 23:49 UTCEPSS rescore
  54. 2026-08-21 17:22 UTCEG score recompute
  55. 2026-08-21 17:22 UTCGHSA enrichment
  56. 2026-08-21 16:29 UTCEG score recompute
  57. 2026-08-21 16:29 UTCGHSA enrichment
  58. 2026-08-21 13:52 UTCEG score recompute
  59. 2026-08-21 13:52 UTCGHSA enrichment
  60. 2026-08-20 22:56 UTCEPSS rescore
  61. 2026-08-20 14:36 UTCGHSA enrichment
  62. 2026-08-19 15:24 UTCEG score recompute
  63. 2026-08-19 14:38 UTCEG score recompute
  64. 2026-08-19 14:37 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-76203?
CVE-2026-76203 is a medium vulnerability published on August 19, 2026. Incorrect Behavior Order: Validate Before Canonicalize in the report theme CSS sanitizer in maalfer Pentestify 1.2.0 through 2.3.2 allows an authenticated user to force outbound HTTP requests from other users' browsers, disclosing their IP address and User-Agent, via CSS hex escapes that…
When was CVE-2026-76203 disclosed?
CVE-2026-76203 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-76203 actively exploited?
CVE-2026-76203 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 78.3% of all scored CVEs.
What is the CVSS score of CVE-2026-76203?
CVE-2026-76203 has a CVSS v3 base score of 5.1 (NVD).
How do I remediate CVE-2026-76203?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-76203, 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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