CVE-2026-58257: GRR vulnerable to Arbitrary File Read and Deletion
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
GRR is a resource management and reservation application. Prior to the advisory-reported fixed version 4.5.0, the database restoration feature fails to enforce or validate file paths. A user with administrator privileges can manipulate the input to read or delete arbitrary files on the server, causing sensitive file disclosure and denial of service through file deletion. The impact is amplified when the server runs with elevated privileges. The advisory reports this issue as fixed in version 4.5.0.
Description quoted from the CVE record (assigned by GitHub_M, published 2026-10-27).
Weakness: CWE-22: Improper Limitation of a Pathname to a Restricted Directory (‘Path Traversal’)
How it can be exploited
Exploitable over the network with low attack complexity needing high privileges and no user interaction. Impact: confidentiality high, integrity high, availability high. CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Public exploit evidence (Exploit Observer)
VEDAS cluster: VEDAS:DOWNTURNDRAGON
Exploit Observer links 3 pieces of public exploit code or detection modules that name this CVE or one of its aliases.
Exploit code and modules (3)
Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.
- Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/suricata/2026/CVE-2026-58257.rules
- Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/suricata/2026/CVE-2026-58257.rules
- Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/suricata/2026/CVE-2026-58257.rules
Vulnerability databases and vendor advisories (1)
Catalogue entries, not exploit evidence.
- Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-58257
2 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.
VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.
Live scores
- EPSS
- 0.005
low predicted chance of attack - VEDAS
- 0.986
strong exploit evidence - On CISA KEV
- Not listed
- Detection rule
- Suricata
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| JeromeDevome GRR | version < 4.5.0 | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
No fixed version or vendor advisory is listed in the CVE record yet. Watch the vendor’s security page.
How to detect it
Suricata rules (network detection)
1 rule that alert on traffic matching this exploit: VEDAS CVE-2026-58257 GRR - Database Restoration Arbitrary File Read/Delete via file_name Path Traversal. Add them to your Suricata rule set and reload.
Show the rules
alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-58257 GRR - Database Restoration Arbitrary File Read/Delete via file_name Path Traversal"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"file_name="; fast_pattern; nocase; pcre:"/[?&]file_name=(?:https?|file|php|data)?(?:\x3a|%3a)?(?:\x2f\x2f)?(?:\x2e\x2e(?:\x2f|%2f|\x5c|%5c)|(?:\x2f|%2f)(?:etc|var|root|home|proc|windows|boot|winnt)(?:\x2f|%2f))/i"; classtype:web-application-attack; reference:cve,CVE-2026-58257; reference:url,https://www.exploit.observer/?keyword=CVE-2026-58257&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=grr&match=exact; sid:1090202; rev:1;)
CVE-2026-58257.rules on GitHub
References
Other references
- https://github.com/JeromeDevome/GRR/security/advisories/GHSA-p8vm-f8mr-q7w7 (x_refsource_CONFIRM)
- https://github.com/JeromeDevome/GRR/commit/e1f93b08ae6ebbab3ddbcd6b900800c39fb048de (x_refsource_MISC)
- https://github.com/JeromeDevome/GRR/tree/v4.5.0 (x_refsource_MISC)
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.