How severe is CVE-2026-5140?

CVE-2026-5140 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-5140 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-5140?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-5140 have an EU (EUVD) identifier?

Yes. CVE-2026-5140 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26228.

When was CVE-2026-5140 published?

CVE-2026-5140 was published on 2026-04-29 and last updated on 2026-06-17.

CVE-2026-5140

CVE-2026-5140 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-93.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26228
Weakness: CWE-93
Published: 2026-04-29
Last modified: 2026-06-17

Description

Improper neutralization of CRLF sequences ('CRLF injection') vulnerability in TUBITAK BILGEM Software Technologies Research Institute Pardus Update allows Authentication Bypass. This issue affects Pardus Update: from 0.6.3 before 0.6.4.

Frequently asked questions

What is CVE-2026-5140?: Improper neutralization of CRLF sequences ('CRLF injection') vulnerability in TUBITAK BILGEM Software Technologies Research Institute Pardus Update allows Authentication Bypass. This issue affects Pardus Update: from 0.6.3 before 0.6.4.
How severe is CVE-2026-5140?: CVE-2026-5140 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-5140 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-5140?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-5140 have an EU (EUVD) identifier?: Yes. CVE-2026-5140 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26228.
When was CVE-2026-5140 published?: CVE-2026-5140 was published on 2026-04-29 and last updated on 2026-06-17.

References

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