CVE-2026-80311

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-08-29. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

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

The Stripe Payment Forms by WP Full Pay WordPress plugin before 8.5.5 does not verify that a subscription belongs to the customer bound to the requesting customer-portal session before cancelling it, allowing a user with a confirmed portal session to cancel subscriptions belonging to other customers.

Exploitation requires the attacker to know the target subscription's identifier, which is high-entropy and not enumerable through the Stripe Payment Forms by WP Full Pay WordPress plugin before 8.5.5.

CVSS v3
4.3
EG Score
4.3(high)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

August 29, 2026

Last Modified

August 31, 2026

Advisory Details (1)

Auto-updated Aug 30, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Stripe Payment Forms by WP Full Pay < 8.5.5 – Cross-Customer Subscription Cancellation via IDOR | CVE 2026-80311 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/e1b0e815-e803-4a14-ab2a-ed860e82c782/

Vendor Advisories for CVE-2026-80311(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 20× in last 7d / 67× 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. 2026-09-21 02:07 UTCEG score recompute
  2. 2026-09-21 02:07 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 00:35 UTCEG score recompute
  5. 2026-09-20 00:35 UTCGHSA enrichment
  6. 2026-09-18 23:04 UTCEG score recompute
  7. 2026-09-18 23:04 UTCGHSA enrichment
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-17 21:32 UTCEG score recompute
  10. 2026-09-17 21:32 UTCGHSA enrichment
  11. 2026-09-16 20:00 UTCEG score recompute
  12. 2026-09-16 20:00 UTCGHSA enrichment
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 18:27 UTCEG score recompute
  16. 2026-09-15 18:27 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 16:29 UTCEG score recompute
  20. 2026-09-14 16:29 UTCGHSA enrichment
  21. 2026-09-13 14:55 UTCEG score recompute
  22. 2026-09-13 14:55 UTCGHSA enrichment
  23. 2026-09-12 13:20 UTCEG score recompute
  24. 2026-09-12 13:20 UTCGHSA enrichment
  25. 2026-09-11 14:53 UTCEPSS rescore
Show 42 more
  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-11 11:48 UTCEG score recompute
  3. 2026-09-11 11:48 UTCGHSA enrichment
  4. 2026-09-10 10:15 UTCEG score recompute
  5. 2026-09-10 10:15 UTCGHSA enrichment
  6. 2026-09-09 08:43 UTCEG score recompute
  7. 2026-09-09 08:43 UTCGHSA enrichment
  8. 2026-09-08 22:01 UTCEPSS rescore
  9. 2026-09-08 07:10 UTCEG score recompute
  10. 2026-09-08 07:10 UTCGHSA enrichment
  11. 2026-09-07 05:39 UTCEG score recompute
  12. 2026-09-07 05:38 UTCGHSA enrichment
  13. 2026-09-06 13:48 UTCEPSS rescore
  14. 2026-09-06 04:05 UTCEG score recompute
  15. 2026-09-06 04:04 UTCGHSA enrichment
  16. 2026-09-05 15:31 UTCEPSS rescore
  17. 2026-09-05 02:32 UTCEG score recompute
  18. 2026-09-05 02:31 UTCGHSA enrichment
  19. 2026-09-04 05:07 UTCEPSS rescore
  20. 2026-09-04 00:58 UTCGHSA enrichment
  21. 2026-09-02 23:26 UTCEG score recompute
  22. 2026-09-02 23:26 UTCGHSA enrichment
  23. 2026-09-02 14:12 UTCEPSS rescore
  24. 2026-09-01 21:54 UTCEG score recompute
  25. 2026-09-01 21:54 UTCGHSA enrichment
  26. 2026-09-01 13:54 UTCEPSS rescore
  27. 2026-09-01 04:40 UTCEPSS rescore
  28. 2026-09-01 04:40 UTCEPSS rescore
  29. 2026-08-31 20:22 UTCGHSA enrichment
  30. 2026-08-31 03:01 UTCEG score recompute
  31. 2026-08-31 03:01 UTCGHSA enrichment
  32. 2026-08-30 19:18 UTCEPSS rescore
  33. 2026-08-30 19:17 UTCEPSS rescore
  34. 2026-08-30 01:29 UTCEG score recompute
  35. 2026-08-30 01:29 UTCGHSA enrichment
  36. 2026-08-30 01:22 UTCEPSS rescore
  37. 2026-08-30 01:08 UTCEG score recompute▲ 4.30
  38. 2026-08-30 01:08 UTCGHSA enrichment
  39. 2026-08-30 01:08 UTCMITRE cvelistV5CVSS v3 → 4.3 · severity → MEDIUM
  40. 2026-08-29 06:21 UTCNVD update
  41. 2026-08-29 06:13 UTCEG score recompute
  42. 2026-08-29 06:12 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-80311?
CVE-2026-80311 is a medium vulnerability published on August 29, 2026. The Stripe Payment Forms by WP Full Pay WordPress plugin before 8.5.5 does not verify that a subscription belongs to the customer bound to the requesting customer-portal session before cancelling it, allowing a user with a confirmed portal session to cancel subscriptions belonging to other…
When was CVE-2026-80311 disclosed?
CVE-2026-80311 was first published in the National Vulnerability Database on August 29, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-80311 actively exploited?
CVE-2026-80311 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 95.2% of all scored CVEs.
What is the CVSS score of CVE-2026-80311?
CVE-2026-80311 has a CVSS v3.1 base score of 4.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-80311?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-80311, 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

Explore the affected products and dependency analysis for CVE-2026-80311

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