CVE-2026-73481

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-08-13. a secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: Elevated riskExposed: 0

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

phpList before 3.7.0-RC5 fail to enforce CSRF token validation on the bounce rule deletion endpoint (bouncerules.php / bouncerule.php). The deletion is performed via a GET request (?page=bouncerules&del=N), and the central CSRF check (verifyCsrfGetToken) is invoked with enforce=false, so it only validates the token when a 'tk' parameter is present. A remote attacker can trick an authenticated administrator into loading a crafted URL (e.g., embedded in an image tag) to delete arbitrary bounce rules from the phplist_bounceregex table without a valid CSRF token.

CVSS v3
5.4
EG Score
5.4(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity54% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 14, 2026

Advisory Details (5)

Auto-updated Aug 13, 2026
Patch available. Sources: github_release, github_pr, github_commit.
generic

phpList < 3.7.0-RC5 Cross-Site Request Forgery via Bounce Rules | Advisories | VulnCheck

https://www.vulncheck.com/advisories/phplist-rc5-cross-site-request-forgery-via-bounce-rules
github_commit Patch Available

commit 5159c3ed33a5 (phpList/phplist3)

Patch available: phpList/phplist3 v3.7.0-RC5 (contains commit 5159c3ed33a5)

https://github.com/phpList/phplist3/commit/5159c3ed33a5674a8169472b50d146d97f630746
github_pr Patch Available

csrf verification on del actions

Patch available: phpList/phplist3 v3.7.0-RC5 (PR #1121 merged 2026-08-09)

https://github.com/phpList/phplist3/pull/1121
github_release Patch Available

v3.7.0-RC5

Patch available: phpList/phplist3 v3.7.0-RC5

https://github.com/phpList/phplist3/releases/tag/v3.7.0-RC5
generic

CSRF enables bounce rule deletion in phpList <= 3.6.16 · Issue #1116 · phpList/phplist3 · GitHub

https://github.com/phpList/phplist3/issues/1116

Vendor Advisories for CVE-2026-73481(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 26× in last 7d / 29× 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. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 12:47 UTCEG score recompute
  3. 2026-08-20 12:47 UTCGHSA enrichment
  4. 2026-08-19 17:04 UTCEPSS rescore
  5. 2026-08-19 14:01 UTCGHSA enrichment
  6. 2026-08-18 15:12 UTCEG score recompute
  7. 2026-08-18 15:12 UTCGHSA enrichment
  8. 2026-08-18 13:49 UTCEPSS rescore
  9. 2026-08-18 13:49 UTCEPSS rescore
  10. 2026-08-17 16:29 UTCEG score recompute
  11. 2026-08-17 16:29 UTCGHSA enrichment
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-16 17:45 UTCEG score recompute
  14. 2026-08-16 17:45 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 02:15 UTCEPSS rescore
  18. 2026-08-15 19:02 UTCEG score recompute
  19. 2026-08-15 19:02 UTCGHSA enrichment
  20. 2026-08-15 01:31 UTCEPSS rescore
  21. 2026-08-14 20:18 UTCEG score recompute
  22. 2026-08-14 20:18 UTCGHSA enrichment
  23. 2026-08-14 19:39 UTCEG score recompute
  24. 2026-08-14 19:39 UTCGHSA enrichment
  25. 2026-08-14 13:14 UTCEG score recompute
Show 4 more
  1. 2026-08-14 13:14 UTCGHSA enrichment
  2. 2026-08-13 19:19 UTCEG score recompute
  3. 2026-08-13 18:52 UTCEG score recompute
  4. 2026-08-13 18:51 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-73481?
CVE-2026-73481 is a medium vulnerability published on August 13, 2026. phpList before 3.7.0-RC5 fail to enforce CSRF token validation on the bounce rule deletion endpoint (bouncerules.php / bouncerule.php). The deletion is performed via a GET request (?page=bouncerules&del=N), and the central CSRF check (verifyCsrfGetToken) is invoked with enforce=false, so it only…
When was CVE-2026-73481 disclosed?
CVE-2026-73481 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73481 actively exploited?
CVE-2026-73481 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 95.3% of all scored CVEs.
What is the CVSS score of CVE-2026-73481?
CVE-2026-73481 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-73481?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73481, 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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