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VulnerabilityPublished

CVE-2026-117656: pow-auth assent · Authentication Bypass by Spoofing

Affects pow-auth assentSource CVE Database V5

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Not known to be exploited · CVSS 9.3 Critical : upgrade to 0.3.2 as a priority.

Data as of 31 Oct 2026, 00:21 UTC

CVSS 4.0 base score
9.3Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (EEF)CVSS 4.09.3
Patch
Available – fixed in 0.3.2, 18898bde0296152165ae470078490e5798329b1b
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 30 Oct 2026.

What to do

Upgrade assent to 0.3.2; assent to 18898bde0296152165ae470078490e5798329b1b.

Affected software

ProductAffectedFixed in
pow-authassentAffected
  • >=0.1.25 <0.3.2
Fixed in
  • 0.3.2
assentpow-auth/assentAffected
  • ≥ a2d331e8c51376d6c0b04a81aad31e0b4d4d64a3, < 18898bde0296152165ae470078490e5798329b1b
Fixed in
  • 18898bde0296152165ae470078490e5798329b1b
Hexassentpkg:hex/assentOther threatsAffected
  • >=0.1.25 <0.3.2
Fixed in
  • 0.3.2

CPE configurations (1)

  • cpe:2.3:a:pow-auth:assent:*:*:*:*:*:*:*:*

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fixed version 0.3.2 of pow-auth Assent is available that addresses this vulnerability. Users of the affected versions (>=0.1.25 <0.3.2) should upgrade to version 0.3.2 or later to remediate this issue. No other mitigations are indicated by the vendor advisory.

Description

CVE-2026-117656 is an authentication bypass vulnerability in the Sign in with Apple strategy of the pow-auth Assent library. The flaw allows an unauthenticated remote attacker to impersonate another user by manipulating the user parameter in the authorization callback. This parameter, controlled by the client, can override verified ID token claims, enabling attackers to replace critical identity attributes such as subject and email. The vulnerability affects versions from 0.1.25 up to but not including 0.3.2 and has been fixed in version 0.3.2.

References

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