Stream HTTP wrapper truncates redirect location to 1024 bytes
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-1861
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 16:25 UTC · Revision 1
Source evidence
Stream HTTP wrapper truncates redirect location to 1024 bytes
core-osv · Original sourcePublished 30 Mar 2025, 05:57 UTC
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.
osv:CVE-2025-1861
Complete source record
{
"id": "7b2930d8f075248a611fb662f90101ab39a51a297ad668149c4001f399a1b2f2",
"url": "https://osv.dev/vulnerability/CVE-2025-1861",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Stream HTTP wrapper truncates redirect location to 1024 bytes",
"summary": "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.",
"evidence": "osv:CVE-2025-1861",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2025-1861",
"aliases": [
"BIT-libphp-2025-1861",
"BIT-php-2025-1861",
"BIT-php-min-2025-1861",
"CVE-2025-1861",
"GHSA-52jp-hrpf-2jff"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/php/php-src",
"type": "GIT",
"events": [
{
"introduced": "381ba9f5d0edd0c9c8ec1dea7e21d513ad08b115"
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{
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{
"introduced": "70ee6c20ad97e02c2b8098aeea96fefbbc3ac5c2"
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{
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{
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{
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},
{
"fixed": "23e05bdcf23319f4922513a91bb0d5e3925d5249"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "8.1.0"
},
{
"fixed": "8.1.31"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "8.2.0"
},
{
"fixed": "8.2.26"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "8.3.0"
},
{
"fixed": "8.3.14"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "8.4.0"
},
{
"fixed": "8.4.5"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-1861.json"
}
}
],
"modified": "2026-10-28T02:30:37.420228272Z",
"provider": "osv",
"references": [
"https://lists.debian.org/debian-lts-announce/2025/03/msg00014.html",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/1xxx/CVE-2025-1861.json",
"https://github.com/php/php-src/security/advisories/GHSA-52jp-hrpf-2jff",
"https://nvd.nist.gov/vuln/detail/CVE-2025-1861",
"https://security.netapp.com/advisory/ntap-20250523-0005/"
],
"provider_metadata": {
"cwe_ids": [
"CWE-131"
],
"cna_assigner": "php",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/1xxx/CVE-2025-1861.json"
}
},
"related_cves": [
{
"value": "CVE-2025-1861",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 504676,
"published_at": "2025-03-30T05:57:57.894+00:00"
}