CVE-2026-11481yoanbernabeu grepai Postgres Embedding Cache chunker.go PostgresStore.LookupByContentHash weak hash
- 2.0LowCVSS base score
- 0.08%Exploitation in 30 daysEPSS · top 100% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
Description
A vulnerability was determined in yoanbernabeu grepai up to 0.35.0. The affected element is the function PostgresStore.LookupByContentHash of the file indexer/chunker.go of the component Postgres Embedding Cache. Executing a manipulation of the argument content_hash can lead to use of weak hash. The attack needs to be launched locally. The attack requires a high level of complexity. The exploitability is described as difficult. The exploit has been publicly disclosed and may be utilized. The pull request to fix this issue awaits acceptance.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. A reference of the record is tagged as an exploit. CISA's SSVC rates its exploitation: a proof of concept is public.
Show the exploits1
References tagged exploit1 reference
- https://github.com/yoanbernabeu/grepai/issues/249 (opens in a new tab)exploitissue-tracking
Timeline
ID reserved
By VulDB
- 1 day later
· 1 day later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulDBCNA (assigner) | 4.0 | Low2.0 | CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P |
| VulDBCNA (assigner) | 3.1 | Low2.5 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R |
| VulDBCNA (assigner) | 3.0 | Low2.5 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R |
| VulDBCNA (assigner) | 2.0 | Low1.0 | AV:L/AC:H/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:UR |
| NVDNVD · Deferred | 4.0 | Low1.1 | CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.08% · top 100% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.0.
Affected products
- affected 0.1
- affected 0.2
- affected 0.3
- affected 0.4
- affected 0.5
- affected 0.6
- affected 0.7
- affected 0.8
- affected 0.9
- affected 0.10
- affected 0.11
- affected 0.12
- affected 0.13
- affected 0.14
- affected 0.15
- affected 0.16
- affected 0.17
- affected 0.18
- affected 0.19
- affected 0.20
- affected 0.21
- affected 0.22
- affected 0.23
- affected 0.24
- affected 0.25
- affected 0.26
- affected 0.27
- affected 0.28
- affected 0.29
- affected 0.30
- affected 0.31
- affected 0.32
- affected 0.33
- affected 0.34
- affected 0.35.0
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/yoanbernabeu/grepaiGHSA-q76h-p6jh-9rw3 (opens in a new tab)
References
References7
- VDB-369101 | yoanbernabeu grepai Postgres Embedding Cache chunker.go PostgresStore.LookupByContentHash weak hash (opens in a new tab)vdb-entrytechnical-description
- VDB-369101 | CTI Indicators (IOB, IOC, TTP, IOA) (opens in a new tab)signaturepermissions-required
- CVE-2026-11481 | CVE Analysis and Report (opens in a new tab)third-party-advisory
- Submit #833997 | yoanbernabeu grepai v0.35.0-1-gf6dbf8d Cache Poisoning (opens in a new tab)third-party-advisory
- https://github.com/yoanbernabeu/grepai/issues/249 (opens in a new tab)exploitissue-tracking
- https://github.com/yoanbernabeu/grepai/pull/250 (opens in a new tab)issue-trackingpatch
- https://github.com/yoanbernabeu/grepai/ (opens in a new tab)product
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-35012 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-q76h-p6jh-9rw3 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-11481)Record last updated .