CVE-2026-36471

MEDIUMPre-NVD 5.85.8—
EchelonGraph scoreHIGH confidence

Score 5.8 from GitHub Security Advisory published 2026-09-21. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.8Exploit: None knownExposed services: Not assessed

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

Deserialization of Untrusted Data of the __post_data parameter in cn_parse_url() in CuteNews v.2.1.2 allows a remote attacker to inject arbitrary values into internal request variables (including __referer) via a crafted base64-encoded serialized PHP payload submitted as a POST parameter.

CVSS v3
5.8
EG Score
5.8MEDIUMhigh confidence
EG Risk
26
EG Risk 26/100CISA SSVC

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
Severity58% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
10th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 21, 2026

Last Modified

September 25, 2026

Advisory Details (3)

Auto-updated Sep 25, 2026
No patch confirmed yet.
generic

GitHub - UmbraDeorum/cutenews-2.0-CVEs-2026-Disclosure: Cutenews (https://github.com/CuteNews/cutenews-2.0) Multiple CVEs 2026 Disclosure Repository · GitHub

https://github.com/UmbraDeorum/cutenews-2.0-CVEs-2026-Disclosure
generic

cutenews-2.0/core/core.php at master · CuteNews/cutenews-2.0 · GitHub

https://github.com/CuteNews/cutenews-2.0/blob/master/core/core.php
generic

GitHub - CuteNews/cutenews-2.0: Cutenews 2.0 Repositary · GitHub

https://github.com/CuteNews/cutenews-2.0

Vendor Advisories for CVE-2026-36471(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 19× in last 7d / 36× 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. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 22:41 UTCGHSA enrichment
  3. 2026-10-04 00:38 UTCEG score recompute
  4. 2026-10-04 00:38 UTCGHSA enrichment
  5. 2026-10-03 14:25 UTCEPSS rescore
  6. 2026-10-03 02:36 UTCEG score recompute
  7. 2026-10-03 02:36 UTCGHSA enrichment
  8. 2026-10-02 04:33 UTCEG score recompute
  9. 2026-10-02 04:33 UTCGHSA enrichment
  10. 2026-10-01 19:49 UTCEPSS rescore
  11. 2026-10-01 06:00 UTCEG score recompute
  12. 2026-10-01 06:00 UTCGHSA enrichment
  13. 2026-09-30 15:03 UTCEPSS rescore
  14. 2026-09-30 07:58 UTCEG score recompute
  15. 2026-09-30 07:58 UTCGHSA enrichment
  16. 2026-09-29 09:55 UTCEG score recompute
  17. 2026-09-29 09:55 UTCGHSA enrichment
  18. 2026-09-28 13:51 UTCEPSS rescore
  19. 2026-09-28 11:52 UTCGHSA enrichment
  20. 2026-09-27 13:49 UTCEG score recompute
  21. 2026-09-27 13:49 UTCGHSA enrichment
  22. 2026-09-27 13:48 UTCEPSS rescore
  23. 2026-09-26 15:58 UTCEPSS rescore
  24. 2026-09-26 15:46 UTCEG score recompute
  25. 2026-09-26 15:46 UTCGHSA enrichment
Show 11 more
  1. 2026-09-26 00:26 UTCEPSS rescore
  2. 2026-09-25 17:44 UTCGHSA enrichment
  3. 2026-09-25 16:24 UTCEG score recompute▲ 5.80
  4. 2026-09-25 16:24 UTCGHSA enrichment
  5. 2026-09-25 16:24 UTCMITRE cvelistV5CVSS v3 → 5.8 · severity → MEDIUM
  6. 2026-09-25 13:25 UTCGHSA enrichment
  7. 2026-09-22 20:13 UTCEG score recompute
  8. 2026-09-22 20:13 UTCGHSA enrichment
  9. 2026-09-21 16:23 UTCNVD update
  10. 2026-09-21 15:30 UTCEG score recompute
  11. 2026-09-21 15:30 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-36471?
CVE-2026-36471 is a medium vulnerability published on September 21, 2026. Deserialization of Untrusted Data of the postdata parameter in cnparse_url() in CuteNews v.2.1.2 allows a remote attacker to inject arbitrary values into internal request variables (including referer) via a crafted base64-encoded serialized PHP payload submitted as a POST parameter.
When was CVE-2026-36471 disclosed?
CVE-2026-36471 was first published on September 21, 2026, with the most recent update on September 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-36471 actively exploited?
CVE-2026-36471 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (10th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-36471?
CVE-2026-36471 has a CVSS v3.1 base score of 5.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-36471?
No fix for CVE-2026-36471 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-36471 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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