Medium severity · published Mar 30, 2025
CVE-2025-1734
In PHP from 8.1.* before 8.1.32, from 8.2.* before 8.2.28, from 8.3.* before 8.3.19, from 8.4.* before 8.4.5, when receiving headers from HTTP server, the headers missing a colon…
5.3
CVSS
0.5%
EPSS
No
On KEV
Description
In PHP from 8.1.* before 8.1.32, from 8.2.* before 8.2.28, from 8.3.* before 8.3.19, from 8.4.* before 8.4.5, when receiving headers from HTTP server, the headers missing a colon (:) are treated as valid headers even though they are not. This may confuse applications into accepting invalid headers.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PH
PHP · PHP
8.1.0 before 8.1.32; 8.2.0 before 8.2.28; 8.3.0 before 8.3.19; 8.4.0 before 8.4.5 · source: NVD
ON
Ontap · Netapp
9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-1734
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-1734
Vendor Advisory
https://github.com/php/php-src/security/advisories/GHSA-pcmh-g36c-qc44
lists.debian.org
https://lists.debian.org/debian-lts-announce/2025/03/msg00014.html
Third Party Advisory
https://security.netapp.com/advisory/ntap-20250523-0009/
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