LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, verify_password in lightrag/api/passwords.py compares plaintext AUTH_ACCOUNTS password values with Python's == operator. The comparison can return after the first mismatching byte, creating response-time differences based on password length and matching prefixes. A network attacker with sufficiently low-latency access can repeatedly query the /login endpoint and use the timing oracle to recover a plaintext-configured password character by character. Deployments using bcrypt-prefixed password values are not affected by this comparison path. This issue is fixed in version 1.5.5.
CVE-2026-85725
MEDIUMPre-NVD 5.95.9—Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 5.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 62% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.9Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.9
- EG Score
- 5.9(medium)
- EG Risk
- 31(Track)EG Risk 31/100SSVC: 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 computedSeverity59% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 38%
- KEV
- Not listed
Published
September 22, 2026
Last Modified
September 22, 2026
Advisory Details (4)
Auto-updated Sep 22, 2026🔬 Proof of concept available. Patch available. Sources: github, github_pr, github_commit, github_release.
github_release Patch Available
v1.5.5
Patch available: HKUDS/LightRAG v1.5.5
https://github.com/HKUDS/LightRAG/releases/tag/v1.5.5github_commit Patch Available
commit 89849c3ed0e0 (HKUDS/LightRAG)
Patch available: HKUDS/LightRAG v1.5.5 (contains commit 89849c3ed0e0)
https://github.com/HKUDS/LightRAG/commit/89849c3ed0e0380345a6b5bade027cfb9a5bf32cgithub_pr Patch Available
fix(auth): constant-time plaintext password comparison (GHSA-c759-cx9p-mrwq)
Patch available: HKUDS/LightRAG v1.5.5 (PR #3423 merged 2026-07-18)
https://github.com/HKUDS/LightRAG/pull/3423github Patch Available🟡 PoC Available
Plaintext Passwords Compared Without Constant-Time Function · Advisory · HKUDS/LightRAG · GitHub
https://github.com/HKUDS/LightRAG/security/advisories/GHSA-c759-cx9p-mrwqVendor Advisories for CVE-2026-85725(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 5× in last 7d / 5× 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.
- 2026-09-23 19:33 UTCEG score recompute
- 2026-09-23 17:54 UTCEPSS rescore
- 2026-09-22 17:36 UTCEG score recompute
- 2026-09-22 16:25 UTCEG score recompute
- 2026-09-22 16:24 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-85725?
CVE-2026-85725 is a medium vulnerability published on September 22, 2026. LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, verifypassword in lightrag/api/passwords.py compares plaintext AUTHACCOUNTS password values with Python's == operator. The comparison can return after the first mismatching byte, creating response-time differences…
When was CVE-2026-85725 disclosed?
CVE-2026-85725 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-2026-85725 actively exploited?
CVE-2026-85725 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 61.9% of all scored CVEs.
What is the CVSS score of CVE-2026-85725?
CVE-2026-85725 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2026-85725?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85725, 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-2026-85725
Is Your Infrastructure Affected by CVE-2026-85725?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.