High severity · published Apr 29, 2026
CVE-2026-5140
Authorization Bypass in TUBITAK BILGEM's Pardus Update
8.8
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PU
Pardus Update · TUBITAK BILGEM Software Technologies Research Institute
0.6.3 before 0.6.4 · source: vendor
Affected product
PU
Pardus Update
TUBITAK BILGEM Software Technologies Research Institute
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5140
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5140
siberguvenlik.gov.tr
https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0131
www.usom.gov.tr
https://www.usom.gov.tr/bildirim/tr-26-0131
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