{
	"document":{
		"aggregate_severity":{
			"namespace":"https://nvd.nist.gov/vuln-metrics/cvss",
			"text":"High"
		},
		"category":"csaf_vex",
		"csaf_version":"2.0",
		"distribution":{
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				"url":"https:/www.first.org/tlp/"
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		"notes":[
			{
				"text":"mod_auth_openidc security update",
				"category":"general",
				"title":"Synopsis"
			},
			{
				"text":"An update for mod_auth_openidc is now available for openEuler-24.03-LTS-SP4",
				"category":"general",
				"title":"Summary"
			},
			{
				"text":"This module enables an Apache 2.x web server to operate as an OpenID Connect Relying Party(RP) to an OpenID Connect Provider(OP).\n\nSecurity Fix(es):\n\nAn out-of-bounds read and a one-byte out-of-bounds write exist in the state-cookie parser of `mod_auth_openidc`. `oidc_state_cookies_parse_token()` (`src/state.c`) scans a cookie token for the `=` that separates the cookie name from its value with a loop whose only real termination condition is finding a `=` byte — it does not stop at the string terminator. The `cookie != NULL` test can never become false, because `cookie` is only ever incremented (never reassigned to `NULL`). A request whose `Cookie` header contains a token that begins with the configured state-cookie prefix (default `mod_auth_openidc_state_`) but contains no `=` makes the loop walk past the end of the token buffer, reading adjacent process memory until it happens to encounter a `=` (`0x3D`) byte, and then writing a `NUL` byte at that out-of-bounds location. This parser runs early on requests that begin a new authentication flow and on requests to the `OIDCRedirectURI` callback — before any session or state validation — so the condition is reachable by an unauthenticated, remote client that fully controls the `Cookie` header.(CVE-2026-54789)",
				"category":"general",
				"title":"Description"
			},
			{
				"text":"An update for mod_auth_openidc is now available for openEuler-24.03-LTS-SP4.\n\nopenEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.",
				"category":"general",
				"title":"Topic"
			},
			{
				"text":"High",
				"category":"general",
				"title":"Severity"
			},
			{
				"text":"mod_auth_openidc",
				"category":"general",
				"title":"Affected Component"
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				"summary":"openEuler-SA-2026-3012",
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				"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3012"
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				"summary":"CVE-2026-54789",
				"category":"self",
				"url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-54789&packageName=mod_auth_openidc"
			},
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				"summary":"nvd cve",
				"category":"external",
				"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54789"
			},
			{
				"summary":"openEuler-SA-2026-3012 vex file",
				"category":"self",
				"url":"https://repo.openeuler.org/security/data/csaf/advisories/2026/csaf-openeuler-sa-2026-3012.json"
			}
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		"title":"An update for mod_auth_openidc is now available for openEuler-24.03-LTS-SP4",
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			"notes":[
				{
					"text":"An out-of-bounds read and a one-byte out-of-bounds write exist in the state-cookie parser of `mod_auth_openidc`. `oidc_state_cookies_parse_token()` (`src/state.c`) scans a cookie token for the `=` that separates the cookie name from its value with a loop whose only real termination condition is finding a `=` byte — it does not stop at the string terminator. The `cookie != NULL` test can never become false, because `cookie` is only ever incremented (never reassigned to `NULL`). A request whose `Cookie` header contains a token that begins with the configured state-cookie prefix (default `mod_auth_openidc_state_`) but contains no `=` makes the loop walk past the end of the token buffer, reading adjacent process memory until it happens to encounter a `=` (`0x3D`) byte, and then writing a `NUL` byte at that out-of-bounds location. This parser runs early on requests that begin a new authentication flow and on requests to the `OIDCRedirectURI` callback — before any session or state validation — so the condition is reachable by an unauthenticated, remote client that fully controls the `Cookie` header.",
					"category":"description",
					"title":"Vulnerability Description"
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						"baseScore":7.5,
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			"title":"CVE-2026-54789"
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}