Medium
OCSP stapling bypass with GnuTLS
Type: advisorySources: OSV
When curl is told to use the Certificate Status Request TLS extension, often referred to as OCSP stapling, to verify that the server certificate is valid, it might fail to detect some OCSP problems and instead wrongly consider the response as fine. If the returned status reports another error than "revoked" (like for example "unauthorized") it is not treated as a bad certificate.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2024-8096
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:38 UTC · Revision 1
Source evidence
When curl is told to use the Certificate Status Request TLS extension, often referred to as OCSP stapling, to verify that the server certificate is valid, it might fail to detect some OCSP problems and instead wrongly consider the response as fine. If the returned status reports another error than "revoked" (like for example "unauthorized") it is not treated as a bad certificate.
osv:CURL-CVE-2024-8096
Complete source record
{
"id": "64099e4ae28bab280d5b58d79d8e78650e91e81d6f31117967479c35426df947",
"url": "https://osv.dev/vulnerability/CURL-CVE-2024-8096",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "OCSP stapling bypass with GnuTLS",
"summary": "When curl is told to use the Certificate Status Request TLS extension, often referred to as OCSP stapling, to verify that the server certificate is valid, it might fail to detect some OCSP problems and instead wrongly consider the response as fine. If the returned status reports another error than \"revoked\" (like for example \"unauthorized\") it is not treated as a bad certificate.",
"evidence": "osv:CURL-CVE-2024-8096",
"products": [],
"severity": "medium",
"structured": {
"id": "CURL-CVE-2024-8096",
"aliases": [
"CURL-CVE-2024-8096",
"CVE-2024-8096"
],
"affected": [
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "7.41.0"
},
{
"fixed": "8.10.0"
}
]
},
{
"repo": "https://github.com/curl/curl.git",
"type": "GIT",
"events": [
{
"introduced": "f13669a375f5bfd14797bda91642cabe076974fa"
},
{
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}
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}
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],
"database_specific": {
"source": "https://curl.se/docs/CURL-CVE-2024-8096.json",
"vanir_signatures": [
{
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"digest": {
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"function_hash": "240788416469107111537004525007068725322"
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"source": "https://github.com/curl/curl.git/commit/aeb1a281cab13c7ba791cb104e556b20e713941f",
"target": {
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"function": "Curl_gtls_verifyserver"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
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{
"id": "CURL-CVE-2024-8096-58d2d761",
"digest": {
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}
],
"modified": "2026-10-25T01:05:04.271559479Z",
"provider": "osv",
"references": [],
"provider_metadata": {
"CWE": {
"id": "CWE-295",
"desc": "Improper Certificate Validation"
},
"URL": "https://curl.se/docs/CVE-2024-8096.json",
"www": "https://curl.se/docs/CVE-2024-8096.html",
"award": {
"amount": "2540",
"currency": "USD"
},
"issue": "https://hackerone.com/reports/2669852",
"affects": "both",
"package": "curl",
"severity": "Medium",
"last_affected": "8.9.1"
}
},
"related_cves": [
{
"value": "CVE-2024-8096",
"evidence": "/aliases"
}
],
"security_relevant": true,
"severity_evidence": "/database_specific/severity"
},
"source_id": "core-osv",
"document_id": 444327,
"published_at": "2024-09-11T08:00:00+00:00"
}