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CVE-2026-118669VulnerabilityPublished

Red Hat Security Advisory: python-oauthlib security update

Affects Red Hat python-oauthlibSource GCVE Database

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Authoritative record:CVE-2026-118669· High 8.4

Not known to be exploited · CVSS 8.4 High : upgrade Red Hat oauthlib to 4.0.0 soon.

Data as of 11 Nov 2026, 09:54 UTC

CVSS 4.0 base score
8.4High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitHub_M)CVSS 4.08.4
Patch
Available – fixed in 4.0.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 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 10 Nov 2026.

What to do

Upgrade oauthlib to 4.0.0.

Affected software

ProductAffectedFixed in
oauthliboauthlibAffected
  • <4.0.0
Fixed in
  • 4.0.0
PyPIoauthlibpkg:pypi/oauthlibOther threatsAffected
  • <4.0.0
Fixed in
  • 4.0.0

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

AI-suggested

Red Hat has released updated python-oauthlib packages (version 2.1.0-1.el8_6.1) for Red Hat Enterprise Linux 8.6 variants that fix this vulnerability. Users should apply these updates as detailed in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate the issue. No additional mitigation steps are indicated beyond applying the official update.

Description

A security vulnerability (CVE-2026-118669) in python-oauthlib was addressed by Red Hat. The flaw involves privilege escalation due to client identity confusion in token grant handlers. This issue affects Red Hat Enterprise Linux 8.6 variants and has been rated as having an important security impact by Red Hat Product Security.

References

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