CVE-2026-91750

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-15. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: Elevated riskExposed: 0

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

WeKnora before 0.7.0 fails to re-validate HTTP redirect targets in the POST /api/v1/knowledge-bases/:id/knowledge/url endpoint when downloading documents from user-supplied URLs. Authenticated attackers can bypass initial SSRF validation by supplying a public URL that redirects to internal network addresses, allowing access to internal services and cloud metadata.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 16, 2026

Advisory Details (5)

Auto-updated Sep 15, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit.
generic

WeKnora before 0.7.0 SSRF via Unvalidated HTTP Redirects | Advisories | VulnCheck

https://www.vulncheck.com/advisories/weknora-before-0.7.0-ssrf-via-unvalidated-http-redirects
generic

WeKnora/internal/application/service/knowledge_util.go at v0.6.2 · Tencent/WeKnora · GitHub

https://github.com/Tencent/WeKnora/blob/v0.6.2/internal/application/service/knowledge_util.go#L339-L348
github_commit Patch Available

commit 1d322c525a61 (Tencent/WeKnora)

Patch available: Tencent/WeKnora v0.7.0 (contains commit 1d322c525a61)

https://github.com/Tencent/WeKnora/commit/1d322c525a6197d24f07555b4b18ad33313b4328
generic

GitHub - Tencent/WeKnora: Open-source LLM knowledge platform: turn raw documents into a queryable RAG, an autonomous reasoning agent, and a self-maintaining Wiki. · GitHub

https://github.com/Tencent/WeKnora
generic🟡 PoC Available

[Bug]: ssrf · Issue #2511 · Tencent/WeKnora · GitHub

https://github.com/Tencent/WeKnora/issues/2511

Vendor Advisories for CVE-2026-91750(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 / 20× 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. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 17:48 UTCGHSA enrichment
  3. 2026-09-19 18:20 UTCEG score recompute
  4. 2026-09-19 18:20 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 18:52 UTCEG score recompute
  7. 2026-09-18 18:52 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 19:23 UTCGHSA enrichment
  10. 2026-09-16 17:50 UTCEG score recompute
  11. 2026-09-16 17:50 UTCGHSA enrichment
  12. 2026-09-16 17:00 UTCEG score recompute
  13. 2026-09-16 17:00 UTCGHSA enrichment
  14. 2026-09-16 14:09 UTCEPSS rescore
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-16 00:55 UTCEG score recompute
  17. 2026-09-16 00:55 UTCGHSA enrichment
  18. 2026-09-15 01:27 UTCEG score recompute
  19. 2026-09-15 00:45 UTCEG score recompute
  20. 2026-09-15 00:44 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-91750?
CVE-2026-91750 is a medium vulnerability published on September 15, 2026. WeKnora before 0.7.0 fails to re-validate HTTP redirect targets in the POST /api/v1/knowledge-bases/:id/knowledge/url endpoint when downloading documents from user-supplied URLs. Authenticated attackers can bypass initial SSRF validation by supplying a public URL that redirects to internal network…
When was CVE-2026-91750 disclosed?
CVE-2026-91750 was first published in the National Vulnerability Database on September 15, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-91750 actively exploited?
CVE-2026-91750 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 81.3% of all scored CVEs.
What is the CVSS score of CVE-2026-91750?
CVE-2026-91750 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-91750?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-91750, 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-2026-91750

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