CVE-2026-114614: Authlib is a Python library which builds OAuth and OpenID Connect servers

Routine

LOW 2.6UPGRADE

CVE-2026-114614 is a low-severity flaw (CVSS 2.6) affecting authlib. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Authlib is a Python library which builds OAuth and OpenID Connect servers. From 0.13 until 1.8.0, authlib.common.security.is_secure_transport() uses a textual prefix comparison for loopback HTTP exemptions, so a URL whose userinfo begins with a loopback host can be accepted even when its parsed host is an external non-loopback system. An external party able to supply a URL to OIDC RP-Initiated Logout registration, authorization-server metadata va

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	2.6 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-601, CWE-693
Published	2026-10-22
Last modified	2026-10-29

Publisher (CNA): GitHub, Inc. · Vendor: authlib

Last updated 2026-10-29 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-22 21:17 UTCPublished CVE record published
2026-10-29 14:48 UTCUpdated Record last modified

authlib authlib UPGRADE

Affected: >= 0.13 and < 1.8.0

Fixed in: 1.8.0

Safe to downgrade to: a release before 0.13

1. Check installed version

apt-cache policy authlib || rpm -q authlib || authlib --version

2. UPGRADE to 1.8.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade authlib

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade authlib

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.13 (Debian / Ubuntu)

apt-cache madison authlib sudo apt install authlib=<VERSION_BEFORE_0.13> sudo apt-mark hold authlib

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list authlib sudo dnf downgrade authlib-<VERSION_BEFORE_0.13> sudo dnf versionlock add authlib

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-114614?

authlib: upgrade to 1.8.0. Exact commands for each OS are on this page.

Is CVE-2026-114614 being exploited?

CVE-2026-114614 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-114614 affect?

CVE-2026-114614 affects authlib. Severity is low (CVSS 2.6). Authlib is a Python library which builds OAuth and OpenID Connect servers. From 0.13 until 1.8.0, authlib.common.security.is_secure_transport() uses a textual prefix comparison for loopback HTTP exemptions, so a URL whose userinfo begins wi

How urgent is CVE-2026-114614?

Priority 16/100. Public exploit reference

Software pages

Python vulnerabilities

Related CVEs

CVE-2026-114619 MEDIUM 4.6 UPGRADE Authlib is a Python library which builds OAuth and OpenID Connect servers
CVE-2026-114618 MEDIUM 6.8 UPGRADE Authlib is a Python library which builds OAuth and OpenID Connect servers
CVE-2026-114617 MEDIUM 4.2 UPGRADE Authlib is a Python library which builds OAuth and OpenID Connect servers
CVE-2026-114616 HIGH 7.4 UPGRADE Authlib is a Python library which builds OAuth and OpenID Connect servers
CVE-2026-114615 HIGH 7.4 UPGRADE Authlib is a Python library which builds OAuth and OpenID Connect servers

References

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