CVE-2026-82284

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-28. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
Trending — 4 sources updated this weekElevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: Elevated riskExposed: 0

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

Quivr versions through 0.0.322 fail to validate chat ownership in the GET /chat/{chat_id}/history, DELETE /chat/{chat_id}, and POST /chat/{chat_id}/question/answer endpoints. Authenticated attackers can read other users' conversation histories including private knowledge base content, delete arbitrary chats, and inject fabricated messages into other users' conversations.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
52(Track*)
EG Risk 52/100SSVC: 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
Severity81% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

August 28, 2026

Last Modified

August 28, 2026

Advisory Details (4)

Auto-updated Aug 28, 2026
No patch confirmed yet.
generic

Quivr Chat Endpoints Missing Ownership Validation | Advisories | VulnCheck

https://www.vulncheck.com/advisories/quivr-chat-endpoints-missing-ownership-validation
generic

quivr/backend/api/quivr_api/modules/chat/controller/chat_routes.py at v0.0.322 · QuivrHQ/quivr · GitHub

https://github.com/QuivrHQ/quivr/blob/v0.0.322/backend/api/quivr_api/modules/chat/controller/chat_routes.py
generic

GitHub - QuivrHQ/quivr: Opiniated RAG for integrating GenAI in your apps 🧠 Focus on your product rather than the RAG. Easy integration in existing products with customisation! Any LLM: GPT4, Groq, Llama. Any Vectorstore: PGVector, Faiss. Any Files. Anyway you want. · GitHub

https://github.com/QuivrHQ/quivr
generic

Chat IDOR - unauthenticated-of-ownership read, delete, and message injection on any chat · Issue #3697 · QuivrHQ/quivr · GitHub

https://github.com/QuivrHQ/quivr/issues/3697

Vendor Advisories for CVE-2026-82284(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 8× in last 7d / 8× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 22:21 UTCGHSA enrichment
  3. 2026-08-29 10:35 UTCGHSA enrichment
  4. 2026-08-28 22:48 UTCEG score recompute
  5. 2026-08-28 22:48 UTCGHSA enrichment
  6. 2026-08-28 20:25 UTCEG score recompute
  7. 2026-08-28 19:40 UTCEG score recompute
  8. 2026-08-28 19:36 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-82284?
CVE-2026-82284 is a high vulnerability published on August 28, 2026. Quivr versions through 0.0.322 fail to validate chat ownership in the GET /chat/{chatid}/history, DELETE /chat/{chatid}, and POST /chat/{chat_id}/question/answer endpoints. Authenticated attackers can read other users' conversation histories including private knowledge base content, delete…
When was CVE-2026-82284 disclosed?
CVE-2026-82284 was first published in the National Vulnerability Database on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82284 actively exploited?
CVE-2026-82284 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 85.3% of all scored CVEs.
What is the CVSS score of CVE-2026-82284?
CVE-2026-82284 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-82284?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82284, 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-2026-82284

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