CVE-2026-65631: potatosalad jose · Inefficient Algorithmic Complexity
Affects potatosalad joseSource CVE Database V5
Not known to be exploited · CVSS 6.9 Medium : upgrade to 1.11.13 when convenient.
Data as of 26 Oct 2026, 20:14 UTC
- Patch
- Available – fixed in 1.11.13, bfd336c0062bff93e65d08c22361897e96afd956
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 26 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade jose to 1.11.13; jose to bfd336c0062bff93e65d08c22361897e96afd956.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| potatosaladjose | Affected
| Fixed in
|
| josepotatosalad/erlang-jose | Affected
| Fixed in
|
Hexjosepkg:hex/joseOther threats | Affected
| Fixed in
|
CPE configurations (1)
cpe:2.3:a:potatosalad:jose:*:*:*:*:*:*:*:*
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade to jose version 1.11.13 or later, where the vulnerability is fixed. No other mitigation or configuration changes are indicated by the vendor advisory.
Description
CVE-2026-65631 is an inefficient algorithmic complexity vulnerability in the potatosalad jose library versions from 1.7.7 up to but not including 1.11.13. It allows an unauthenticated remote attacker to cause a CPU-exhaustion denial of service by submitting a crafted RSA JSON Web Key that triggers expensive factoring operations. The issue is fixed in version 1.11.13.
References
- github.com/potatosalad/erlang-jose/security/advisories/GHSA-3m45-vrpj-xmrq (opens in a new tab)
- cna.erlef.org/cves/CVE-2026-65631.html (opens in a new tab)
- osv.dev/vulnerability/EEF-CVE-2026-65631 (opens in a new tab)
- github.com/potatosalad/erlang-jose/commit/d19e1ba68d88c68d29aa942be2573a22dbafca1f (opens in a new tab)
- github.com/potatosalad/erlang-jose/commit/bfd336c0062bff93e65d08c22361897e96afd956 (opens in a new tab)