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VulnerabilityPublished

CVE-2026-65626: potatosalad jose · Observable Discrepancy

Affects potatosalad joseSource CVE Database V5

0

Not known to be exploited · CVSS 5.9 Medium : upgrade to 1.11.13 when convenient.

Data as of 26 Oct 2026, 20:14 UTC

CVSS 4.0 base score
5.9Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 1.11.13, 0eac8cef9aaa48fb6846f4e47a0002dc4a73966d
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 0eac8cef9aaa48fb6846f4e47a0002dc4a73966d.

Affected software

ProductAffectedFixed in
potatosaladjoseAffected
  • >=1.3.0 <1.11.13
Fixed in
  • 1.11.13
josepotatosalad/erlang-joseAffected
  • ≥ 853c5d4c4c0bd2a7ecb055b237f4284184e176c8, < 0eac8cef9aaa48fb6846f4e47a0002dc4a73966d
Fixed in
  • 0eac8cef9aaa48fb6846f4e47a0002dc4a73966d
Hexjosepkg:hex/joseOther threatsAffected
  • >=1.3.0 <1.11.13
Fixed in
  • 1.11.13

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 potatosalad jose version 1.11.13 or later, where this vulnerability is fixed. The fixed versions address the padding oracle by implementing appropriate countermeasures. No other mitigation is required if the upgrade is applied.

Description

CVE-2026-65626 is a Bleichenbacher padding oracle vulnerability in the pure-Erlang RSAES-PKCS1-v1_5 decryption implementation of the jose_jwa_pkcs1 module in potatosalad jose. The vulnerability arises because the decryption function returns distinct error messages depending on padding validity and does not implement countermeasures to mask these differences. An attacker with access to the public RSA key and the ability to submit ciphertexts to a decryption endpoint can exploit this to recover plaintext or forge signatures through adaptive chosen-ciphertext attacks. This affects versions from 1.3.0 up to but not including 1.11.13. The issue is fixed in version 1.11.13.

References

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