CriticalFix available
apache2 — security advisory
ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache HTTP Server 2.4.48 and earlier.
- Products
- apache2
- Affected versions
- Not specified
- Fixed versions
- 2.4.49-r0
- CVEs
- CVE-2021-39275
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 22:06 UTC · Revision 1
Source evidence
ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache HTTP Server 2.4.48 and earlier.
osv:ALPINE-CVE-2021-39275
apache2
Fixed versions: 2.4.49-r0
apache2
Fixed versions: 2.4.49-r0
apache2
Fixed versions: 2.4.49-r0
apache2
Fixed versions: 2.4.49-r0
apache2
Fixed versions: 2.4.49-r0
apache2
Fixed versions: 2.4.49-r0
apache2
Fixed versions: 2.4.49-r0
apache2
Fixed versions: 2.4.49-r0
apache2
Fixed versions: 2.4.49-r0
apache2
Fixed versions: 2.4.49-r0
apache2
Fixed versions: 2.4.49-r0
apache2
Fixed versions: 2.4.49-r0
apache2
Fixed versions: 2.4.49-r0
apache2
Fixed versions: 2.4.49-r0
Complete source record
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"modified": "2026-10-23T17:17:56.207308285Z",
"provider": "osv",
"upstream": [
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"references": [
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"source_id": "core-osv",
"document_id": 415529,
"published_at": "2021-09-16T15:15:07.58+00:00"
}