CVE-2025-1861

Stream HTTP wrapper truncates redirect location to 1024 bytes

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.

Category

6.3
CVSS
Severity: Medium
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.09%
Vendor Advisory github.com
Affected: PHP Group PHP
Published at:
Updated at:

References

Link Tags
https://github.com/php/php-src/security/advisories/GHSA-52jp-hrpf-2jff vendor advisory
https://security.netapp.com/advisory/ntap-20250523-0005/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2025-1861?
CVE-2025-1861 has been scored as a medium severity vulnerability.
How to fix CVE-2025-1861?
To fix CVE-2025-1861, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-1861 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-1861 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-1861?
CVE-2025-1861 affects PHP Group PHP.
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