CVE Tools

CVE-2025-1861

Stream HTTP wrapper truncates redirect location to 1024 bytes

Published: Mar 30, 2025Updated: Nov 3, 2025 Sources: CVE List NVD BDUCWE-131
9.8CVSSCRITICAL

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 parsing HTTP redirect in the response to an HTTP request, there is currently limit on the location value size caused by limited size of the location buffer to 1024. However as per RFC9110, the limit is recommended to be 8000. This may lead to incorrect URL truncation and redirecting to a wrong location.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High

Weaknesses

Affected Products

php grouposs-projectOSS Librariesaka php, pear
phposs-projectUSOSS Librariesaka php language, pecl, pear
and 1 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
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References

and 9 more references View all →

Timeline

Published
Mar 30, 2025
Last Updated
Nov 3, 2025

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