CVE-2026-111653: 53AIHub through 0.5.3 contains a missing authentication vulnerability that allows unauthenticated attackers to

Routine

MEDIUM 5.3REMOTE

CVE-2026-111653 is a medium-severity flaw (CVSS 5.3) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

53AIHub through 0.5.3 contains a missing authentication vulnerability that allows unauthenticated attackers to overwrite any enterprise's profile by sending PUT requests to /api/enterprises/:id. Because UpdateEnterprise only enforces checks when IS_SAAS is true, attackers can enumerate sequential enterprise IDs and overwrite logos, display names and branding for defacement and phishing.

Why this priority

CISA SSVC: public proof of concept
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 72%)
CISA exploited list	No
Weakness	CWE-306
Published	2026-10-16
Last modified	2026-10-23

Publisher (CNA): VulnCheck

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-10-16 18:17 UTCPublished CVE record published
2026-10-23 17:17 UTCUpdated Record last modified

Exact fixes by distribution

Fedora 46 · gum · FIXED · 2.0.2-1.fc46 · FEDORA-2026-da0d6dd894 · source

sudo dnf upgrade --advisory=FEDORA-2026-da0d6dd894

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-2026-111653?

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

Is CVE-2026-111653 being exploited?

CVE-2026-111653 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-2026-111653 affect?

CVE-2026-111653 affects affected software. Severity is medium (CVSS 5.3). 53AIHub through 0.5.3 contains a missing authentication vulnerability that allows unauthenticated attackers to overwrite any enterprise's profile by sending PUT requests to /api/enterprises/:id. Because UpdateEnterprise only enforces checks

How urgent is CVE-2026-111653?

Priority 34/100. CISA SSVC: public proof of concept; Remotely exploitable, no login, no user action

References

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