CVE-2026-115933: Postiz signs its session, invitation and password reset tokens with one shared secret and without any marker o

This month

CRITICAL 9.9

CVE-2026-115933 is a critical-severity flaw (CVSS 9.9) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Postiz signs its session, invitation and password reset tokens with one shared secret and without any marker of what a token is for. A route that refreshes the credentials of a browser-extension channel signed data taken from the request itself and stored the result where the requesting user can read it back. A user could therefore obtain a validly signed token containing any claims they choose, which the application accepts as a session, as an o

Why this priority

Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score	9.9 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	n/a
CISA exploited list	No
Weakness	CWE-290, CWE-345, CWE-915
Published	2026-10-24
Last modified	2026-10-24

Publisher (CNA): postiz

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-10-24 15:17 UTCPublished CVE record published
2026-10-24 15:17 UTCUpdated Record last modified

Exact fixes by distribution

Fedora ELN · selinux-policy · FIXED · 45.23-1.eln159 · FEDORA-2026-3668c969a2 · source

sudo dnf upgrade --advisory=FEDORA-2026-3668c969a2

Fedora 46 · sugar-toolkit-gtk3 · FIXED · 0.122-2.fc46 · FEDORA-2026-d11eb2faf0 · source

sudo dnf upgrade --advisory=FEDORA-2026-d11eb2faf0

Advisories and coverage

Research and news

Vulners Bulletins: CVE-2026-115933 2026-10-24
Vulners Bulletins: CVE-2026-115933 2026-10-24
Vulners Bulletins: CVE-2026-115933 Forged signed tokens let any registered user take over other users and organizations 2026-10-24
Vulners Bulletins: CVE-2026-115933 Forged signed tokens let any registered user take over other users and organizations 2026-10-24

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-2026-115933?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-115933 being exploited?

CVE-2026-115933 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-2026-115933 affect?

CVE-2026-115933 affects affected software. Severity is critical (CVSS 9.9). Postiz signs its session, invitation and password reset tokens with one shared secret and without any marker of what a token is for. A route that refreshes the credentials of a browser-extension channel signed data taken from the request it

How urgent is CVE-2026-115933?

Priority 35/100. Critical severity

References

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