CVE-2026-16056

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-08-04. 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 Contest Gallery WordPress plugin before 30.0.7 does not perform any capability or nonce check in one of its handlers, allowing any authenticated user down to Subscriber to read the site's entire stored OpenAI prompt history.

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
6%
KEV
Not listed

Published

August 4, 2026

Last Modified

August 4, 2026

Advisory Details (1)

Auto-updated Aug 4, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Contest Gallery < 30.0.7 – Subscriber+ OpenAI Prompt History Disclosure via post_cg_get_openai_prompts | CVE 2026-16056 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/53aec8d3-da17-4183-91b3-73b45681fd20/

Vendor Advisories for CVE-2026-16056(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 / 51× 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 20:33 UTCGHSA enrichment
  2. 2026-08-19 18:56 UTCEG score recompute
  3. 2026-08-19 18:56 UTCGHSA enrichment
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-18 15:48 UTCEG score recompute
  6. 2026-08-18 15:48 UTCGHSA enrichment
  7. 2026-08-18 13:48 UTCEPSS rescore
  8. 2026-08-17 13:54 UTCEG score recompute
  9. 2026-08-17 13:54 UTCGHSA enrichment
  10. 2026-08-17 13:47 UTCEPSS rescore
  11. 2026-08-16 14:56 UTCEPSS rescore
  12. 2026-08-16 12:17 UTCEG score recompute
  13. 2026-08-16 12:17 UTCGHSA enrichment
  14. 2026-08-16 02:14 UTCEPSS rescore
  15. 2026-08-15 10:40 UTCEG score recompute
  16. 2026-08-15 10:40 UTCGHSA enrichment
  17. 2026-08-15 01:30 UTCEPSS rescore
  18. 2026-08-14 09:02 UTCEG score recompute
  19. 2026-08-14 09:02 UTCGHSA enrichment
  20. 2026-08-13 22:00 UTCEPSS rescore
  21. 2026-08-13 07:24 UTCEG score recompute
  22. 2026-08-13 07:24 UTCGHSA enrichment
  23. 2026-08-12 13:50 UTCEPSS rescore
  24. 2026-08-12 05:46 UTCEG score recompute
  25. 2026-08-12 05:46 UTCGHSA enrichment
Show 26 more
  1. 2026-08-11 13:42 UTCEPSS rescore
  2. 2026-08-11 04:08 UTCEG score recompute
  3. 2026-08-11 04:08 UTCGHSA enrichment
  4. 2026-08-11 00:00 UTCEPSS rescore
  5. 2026-08-10 02:31 UTCEG score recompute
  6. 2026-08-10 02:31 UTCGHSA enrichment
  7. 2026-08-09 13:46 UTCEPSS rescore
  8. 2026-08-09 00:54 UTCEG score recompute
  9. 2026-08-09 00:54 UTCGHSA enrichment
  10. 2026-08-08 16:37 UTCEPSS rescore
  11. 2026-08-07 23:17 UTCEG score recompute
  12. 2026-08-07 23:17 UTCGHSA enrichment
  13. 2026-08-06 21:39 UTCEG score recompute
  14. 2026-08-06 21:39 UTCGHSA enrichment
  15. 2026-08-06 13:46 UTCEPSS rescore
  16. 2026-08-05 20:02 UTCEG score recompute
  17. 2026-08-05 20:02 UTCGHSA enrichment
  18. 2026-08-05 19:17 UTCEPSS rescore
  19. 2026-08-04 18:25 UTCGHSA enrichment
  20. 2026-08-04 17:49 UTCEG score recompute▲ 4.30
  21. 2026-08-04 17:48 UTCGHSA enrichment
  22. 2026-08-04 17:46 UTCMITRE cvelistV5CVSS v3 → 4.3 · severity → MEDIUM
  23. 2026-08-04 15:10 UTCEPSS rescore
  24. 2026-08-04 07:17 UTCNVD update
  25. 2026-08-04 06:35 UTCEG score recompute
  26. 2026-08-04 06:33 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-16056?
CVE-2026-16056 is a medium vulnerability published on August 4, 2026. The Contest Gallery WordPress plugin before 30.0.7 does not perform any capability or nonce check in one of its handlers, allowing any authenticated user down to Subscriber to read the site's entire stored OpenAI prompt history.
When was CVE-2026-16056 disclosed?
CVE-2026-16056 was first published in the National Vulnerability Database 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-2026-16056 actively exploited?
CVE-2026-16056 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 94.1% of all scored CVEs.
What is the CVSS score of CVE-2026-16056?
CVE-2026-16056 has a CVSS v3.1 base score of 4.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-16056?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16056, 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-2026-16056

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