CVE-2026-11561: Improper neutralization of special elements used in an expression language statement ('expression language inj

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CRITICAL 9.8REMOTE

CVE-2026-11561 is a critical-severity flaw (CVSS 9.8) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper neutralization of special elements used in an expression language statement ('expression language injection') vulnerability in Soagen Informatics Technologies Software and Consulting Inc. Apinizer allows Code Injection. This issue affects Apinizer: from 2026.04.0 before 2026.04.6.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 61%)
CISA exploited list	No
Weakness	CWE-917
Published	2026-06-11
Last modified	2026-10-25

Publisher (CNA): Computer Emergency Response Team of the Republic of Turkey

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-06-11 13:16 UTCPublished CVE record published
2026-10-25 23:10 UTCUpdated Record last modified

Exact fixes by distribution

Fedora 46 · log4cplus · FIXED · 2.2.0.1-2.fc46 · FEDORA-2026-fc241370c9 · source

sudo dnf upgrade --advisory=FEDORA-2026-fc241370c9

Fedora ELN · velocitty · FIXED · 1.0.3-2.eln159 · FEDORA-2026-edae8cd295 · source

sudo dnf upgrade --advisory=FEDORA-2026-edae8cd295

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: alperenkesk/CVE-2026-11561 (1 stars)

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-2026-11561?

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

Is CVE-2026-11561 being exploited?

CVE-2026-11561 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-2026-11561 affect?

CVE-2026-11561 affects affected software. Severity is critical (CVSS 9.8). Improper neutralization of special elements used in an expression language statement ('expression language injection') vulnerability in Soagen Informatics Technologies Software and Consulting Inc. Apinizer allows Code Injection. This issue

How urgent is CVE-2026-11561?

Priority 49/100. Critical severity; Remotely exploitable, no login, no user action

References

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