CVE-2026-79313

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-22. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 5 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

webpy web.py 0.76 is vulnerable to Insufficient Session Expiration. The application's session management relies on periodic cleanup to expire sessions instead of checking the last-access time when a session is loaded. As a result, an expired session whose record has not yet been cleaned up can still be replayed and used, allowing an attacker holding a previously valid session cookie to continue accessing protected resources after the configured idle timeout.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
45%
KEV
Not listed

Published

September 22, 2026

Last Modified

September 22, 2026

Advisory Details (2)

Auto-updated Sep 22, 2026
No patch confirmed yet.
generic

GitHub - webpy/webpy: web.py is a web framework for python that is as simple as it is powerful. · GitHub

https://github.com/webpy/webpy
generic

TraceLoom/CVEs/CVE-2026-79313.md at main · lichoin/TraceLoom · GitHub

https://github.com/lichoin/TraceLoom/blob/main/CVEs/CVE-2026-79313.md

Vendor Advisories for CVE-2026-79313(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 22× in last 7d / 22× 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. 2026-09-24 02:06 UTCGHSA enrichment
  2. 2026-09-23 21:53 UTCEG score recompute
  3. 2026-09-23 21:53 UTCGHSA enrichment
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 17:39 UTCGHSA enrichment
  6. 2026-09-23 13:26 UTCGHSA enrichment
  7. 2026-09-23 09:12 UTCGHSA enrichment
  8. 2026-09-23 04:59 UTCGHSA enrichment
  9. 2026-09-23 00:45 UTCEG score recompute
  10. 2026-09-23 00:45 UTCGHSA enrichment
  11. 2026-09-22 20:32 UTCEG score recompute▲ 9.80
  12. 2026-09-22 20:32 UTCGHSA enrichment
  13. 2026-09-22 20:32 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  14. 2026-09-22 20:12 UTCEG score recompute▼ 9.80
  15. 2026-09-22 20:12 UTCGHSA enrichment
  16. 2026-09-22 20:11 UTCNVD update
  17. 2026-09-22 19:23 UTCEG score recompute▲ 9.80
  18. 2026-09-22 19:23 UTCGHSA enrichment
  19. 2026-09-22 19:23 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  20. 2026-09-22 15:18 UTCNVD update
  21. 2026-09-22 14:50 UTCEG score recompute
  22. 2026-09-22 14:50 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-79313?
CVE-2026-79313 is a critical vulnerability published on September 22, 2026. webpy web.py 0.76 is vulnerable to Insufficient Session Expiration. The application's session management relies on periodic cleanup to expire sessions instead of checking the last-access time when a session is loaded. As a result, an expired session whose record has not yet been cleaned up can…
When was CVE-2026-79313 disclosed?
CVE-2026-79313 was first published in the National Vulnerability Database on September 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-79313 actively exploited?
CVE-2026-79313 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 54.8% of all scored CVEs.
What is the CVSS score of CVE-2026-79313?
CVE-2026-79313 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-79313?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-79313, 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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