{"schema_version":"1.7.2","id":"OESA-2026-2611","modified":"2026-06-12T12:24:54Z","published":"2026-06-12T12:24:54Z","upstream":["CVE-2026-49975"],"summary":"mod_http2 security update","details":"The mod_h2 Apache httpd module implements the HTTP2 protocol (h2+h2c) on top of libnghttp2 for httpd 2.4 servers.\r\n\r\nSecurity Fix(es):\n\nA vulnerability was found in Apache HTTP Server (Web Server) (affected version not known). It has been rated as critical.Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use.Impacted is availability.The exploit is available at blog.calif.io. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k.Applying a patch is able to eliminate this problem.(CVE-2026-49975)","affected":[{"package":{"ecosystem":"openEuler:24.03-LTS-SP1","name":"mod_http2","purl":"pkg:rpm/openEuler/mod_http2&distro=openEuler-24.03-LTS-SP1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.25-5.oe2403sp1"}]}],"ecosystem_specific":{"aarch64":["mod_http2-2.0.25-5.oe2403sp1.aarch64.rpm","mod_http2-debuginfo-2.0.25-5.oe2403sp1.aarch64.rpm","mod_http2-debugsource-2.0.25-5.oe2403sp1.aarch64.rpm"],"noarch":["mod_http2-help-2.0.25-5.oe2403sp1.noarch.rpm"],"src":["mod_http2-2.0.25-5.oe2403sp1.src.rpm"],"x86_64":["mod_http2-2.0.25-5.oe2403sp1.x86_64.rpm","mod_http2-debuginfo-2.0.25-5.oe2403sp1.x86_64.rpm","mod_http2-debugsource-2.0.25-5.oe2403sp1.x86_64.rpm"]}},{"package":{"ecosystem":"openEuler:24.03-LTS-SP3","name":"mod_http2","purl":"pkg:rpm/openEuler/mod_http2&distro=openEuler-24.03-LTS-SP3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.25-5.oe2403sp3"}]}],"ecosystem_specific":{"aarch64":["mod_http2-2.0.25-5.oe2403sp3.aarch64.rpm","mod_http2-debuginfo-2.0.25-5.oe2403sp3.aarch64.rpm","mod_http2-debugsource-2.0.25-5.oe2403sp3.aarch64.rpm"],"noarch":["mod_http2-help-2.0.25-5.oe2403sp3.noarch.rpm"],"src":["mod_http2-2.0.25-5.oe2403sp3.src.rpm"],"x86_64":["mod_http2-2.0.25-5.oe2403sp3.x86_64.rpm","mod_http2-debuginfo-2.0.25-5.oe2403sp3.x86_64.rpm","mod_http2-debugsource-2.0.25-5.oe2403sp3.x86_64.rpm"]}},{"package":{"ecosystem":"openEuler:20.03-LTS-SP4","name":"mod_http2","purl":"pkg:rpm/openEuler/mod_http2&distro=openEuler-20.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15.13-4.oe2003sp4"}]}],"ecosystem_specific":{"aarch64":["mod_http2-1.15.13-4.oe2003sp4.aarch64.rpm","mod_http2-debuginfo-1.15.13-4.oe2003sp4.aarch64.rpm","mod_http2-debugsource-1.15.13-4.oe2003sp4.aarch64.rpm"],"noarch":["mod_http2-help-1.15.13-4.oe2003sp4.noarch.rpm"],"src":["mod_http2-1.15.13-4.oe2003sp4.src.rpm"],"x86_64":["mod_http2-1.15.13-4.oe2003sp4.x86_64.rpm","mod_http2-debuginfo-1.15.13-4.oe2003sp4.x86_64.rpm","mod_http2-debugsource-1.15.13-4.oe2003sp4.x86_64.rpm"]}},{"package":{"ecosystem":"openEuler:22.03-LTS-SP4","name":"mod_http2","purl":"pkg:rpm/openEuler/mod_http2&distro=openEuler-22.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15.25-5.oe2203sp4"}]}],"ecosystem_specific":{"aarch64":["mod_http2-1.15.25-5.oe2203sp4.aarch64.rpm","mod_http2-debuginfo-1.15.25-5.oe2203sp4.aarch64.rpm","mod_http2-debugsource-1.15.25-5.oe2203sp4.aarch64.rpm"],"noarch":["mod_http2-help-1.15.25-5.oe2203sp4.noarch.rpm"],"src":["mod_http2-1.15.25-5.oe2203sp4.src.rpm"],"x86_64":["mod_http2-1.15.25-5.oe2203sp4.x86_64.rpm","mod_http2-debuginfo-1.15.25-5.oe2203sp4.x86_64.rpm","mod_http2-debugsource-1.15.25-5.oe2203sp4.x86_64.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2611"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49975"}],"database_specific":{"severity":"High"}}