{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-18649 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-18649 is a high-severity denial of service vulnerability in Red Hat Enterprise Linux 10, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-18649 and fix it if it is affected.\n\nWhat it is: CVE-2026-18649 is a high-severity denial of service vulnerability in Red Hat Enterprise Linux 10, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-18649 in the wild and no public exploit code.\n\nAffected product: Red Hat Enterprise Linux 10. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-18649/ (Markdown: https://insights.sbomify.com/CVE-2026-18649/index.md)","id":"CVE-2026-18649","markdown":"https://insights.sbomify.com/CVE-2026-18649/index.md","name":"CVE-2026-18649","record":{"aliases":["ALSA-2026:53451","ALSA-2026:53452","CLSA-2026-1786699059","CLSA-2026-1786714360","DEBIAN-CVE-2026-18649","ECHO-49ac-ba0f-ce98","GHSA-wr93-5xph-995g","RHSA-2026:53451","RHSA-2026:53452","RHSA-2026:61588","RHSA-2026:61943","RHSA-2026:65999","RLSA-2026:53451","RLSA-2026:53452","ROOT-OS-DEBIAN-12-CVE-2026-18649","ROOT-OS-DEBIAN-13-CVE-2026-18649","UBUNTU-CVE-2026-18649","USN-8778-1"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"GStreamer RTP depayloader","requires_auth":"none","summary":"Remote attackers can cause denial of service in GStreamer applications by sending fragmented RTP packets that exhaust memory due to missing size limits in H.264/H.265 depayloaders.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"A flaw was found in the GStreamer gst-plugins-good package. The rtph264depay and rtph265depay RTP depayloader elements do not enforce a maximum size limit on the reassembly buffer used during fragmented RTP packet processing. A remote, unauthenticated attacker can send a continuous stream of RTP fragments without ever transmitting an end-of-fragment marker, causing the reassembly buffer to grow without bound until process memory is exhausted. This results in a denial of service through process termination.","ecosystems":["AlmaLinux:10","AlmaLinux:9","Red Hat:enterprise_linux:10.2","Red Hat:enterprise_linux:9::appstream","Red Hat:rhel_e4s:9.2::appstream","Red Hat:rhel_e4s:9.4::appstream","Red Hat:rhel_eus:9.6::appstream","Rocky Linux:10","Rocky Linux:9"],"exploits":{"exploitdb":0,"first_seen":"2026-08-06","github_poc":1,"max_poc_stars":4,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-08-06T17:14:30Z","kind":"github_poc","ref":"https://github.com/0xSemizzz/CVE-2026-18649","stars":4,"title":"Proof of concept for CVE-2026-18649, a remote denial of service vulnerability in GStreamer's H.264 RTP depayloader (rtph264depay)."}],"tier":"poc_unverified"},"has_fix":true,"headline":"Gstreamer1-plugins-good: gst-plugins-good: unbounded memory growth in rtph264depay and rtph265depay rtp depayloaders","id":"CVE-2026-18649","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":36,"n_references":16,"next":{"headline":"Missing Authorization Leading to Root Code Execution in HAVELSAN's Liman MYS","id":"CVE-2026-18650"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["1.26.7-2.el10_2.3"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good","purl":"pkg:rpm/almalinux/gstreamer1-plugins-good","source":"ALSA-2026:53451"},{"ecosystem":"AlmaLinux:10","fixed":["1.26.7-2.el10_2.3"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-gtk","purl":"pkg:rpm/almalinux/gstreamer1-plugins-good-gtk","source":"ALSA-2026:53451"},{"ecosystem":"AlmaLinux:9","fixed":["1.22.12-7.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good","purl":"pkg:rpm/almalinux/gstreamer1-plugins-good","source":"ALSA-2026:53452"},{"ecosystem":"AlmaLinux:9","fixed":["1.22.12-7.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-gtk","purl":"pkg:rpm/almalinux/gstreamer1-plugins-good-gtk","source":"ALSA-2026:53452"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.26.7-2.el10_2.3"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good","purl":"pkg:rpm/redhat/gstreamer1-plugins-good","source":"RHSA-2026:53451"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.26.7-2.el10_2.3"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-debuginfo","source":"RHSA-2026:53451"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.26.7-2.el10_2.3"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-debugsource","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-debugsource","source":"RHSA-2026:53451"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.26.7-2.el10_2.3"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-gtk","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-gtk","source":"RHSA-2026:53451"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.26.7-2.el10_2.3"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-gtk-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-gtk-debuginfo","source":"RHSA-2026:53451"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.26.7-2.el10_2.3"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-qt6-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-qt6-debuginfo","source":"RHSA-2026:53451"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:1.22.12-7.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good","purl":"pkg:rpm/redhat/gstreamer1-plugins-good","source":"RHSA-2026:53452"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:1.22.12-7.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-debuginfo","source":"RHSA-2026:53452"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:1.22.12-7.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-debugsource","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-debugsource","source":"RHSA-2026:53452"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:1.22.12-7.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-gtk","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-gtk","source":"RHSA-2026:53452"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:1.22.12-7.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-gtk-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-gtk-debuginfo","source":"RHSA-2026:53452"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:1.22.12-7.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-qt-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-qt-debuginfo","source":"RHSA-2026:53452"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:1.18.4-8.el9_2.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good","purl":"pkg:rpm/redhat/gstreamer1-plugins-good","source":"RHSA-2026:65999"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:1.18.4-8.el9_2.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-debuginfo","source":"RHSA-2026:65999"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:1.18.4-8.el9_2.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-debugsource","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-debugsource","source":"RHSA-2026:65999"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:1.18.4-8.el9_2.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-gtk","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-gtk","source":"RHSA-2026:65999"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:1.18.4-8.el9_2.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-gtk-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-gtk-debuginfo","source":"RHSA-2026:65999"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:1.18.4-8.el9_2.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-qt-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-qt-debuginfo","source":"RHSA-2026:65999"},{"ecosystem":"Red Hat:rhel_e4s:9.4::appstream","fixed":["0:1.22.1-4.el9_4.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good","purl":"pkg:rpm/redhat/gstreamer1-plugins-good","source":"RHSA-2026:61588"},{"ecosystem":"Red Hat:rhel_e4s:9.4::appstream","fixed":["0:1.22.1-4.el9_4.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-debuginfo","source":"RHSA-2026:61588"},{"ecosystem":"Red Hat:rhel_e4s:9.4::appstream","fixed":["0:1.22.1-4.el9_4.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-debugsource","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-debugsource","source":"RHSA-2026:61588"},{"ecosystem":"Red Hat:rhel_e4s:9.4::appstream","fixed":["0:1.22.1-4.el9_4.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-gtk","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-gtk","source":"RHSA-2026:61588"},{"ecosystem":"Red Hat:rhel_e4s:9.4::appstream","fixed":["0:1.22.1-4.el9_4.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-gtk-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-gtk-debuginfo","source":"RHSA-2026:61588"},{"ecosystem":"Red Hat:rhel_e4s:9.4::appstream","fixed":["0:1.22.1-4.el9_4.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-qt-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-qt-debuginfo","source":"RHSA-2026:61588"},{"ecosystem":"Red Hat:rhel_eus:9.6::appstream","fixed":["0:1.22.12-5.el9_6.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good","purl":"pkg:rpm/redhat/gstreamer1-plugins-good","source":"RHSA-2026:61943"},{"ecosystem":"Red Hat:rhel_eus:9.6::appstream","fixed":["0:1.22.12-5.el9_6.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-debuginfo","source":"RHSA-2026:61943"},{"ecosystem":"Red Hat:rhel_eus:9.6::appstream","fixed":["0:1.22.12-5.el9_6.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-debugsource","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-debugsource","source":"RHSA-2026:61943"},{"ecosystem":"Red Hat:rhel_eus:9.6::appstream","fixed":["0:1.22.12-5.el9_6.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-gtk","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-gtk","source":"RHSA-2026:61943"},{"ecosystem":"Red Hat:rhel_eus:9.6::appstream","fixed":["0:1.22.12-5.el9_6.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-gtk-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-gtk-debuginfo","source":"RHSA-2026:61943"},{"ecosystem":"Red Hat:rhel_eus:9.6::appstream","fixed":["0:1.22.12-5.el9_6.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good-qt-debuginfo","purl":"pkg:rpm/redhat/gstreamer1-plugins-good-qt-debuginfo","source":"RHSA-2026:61943"},{"ecosystem":"Rocky Linux:10","fixed":["0:1.26.7-2.el10_2.3"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good","purl":"pkg:rpm/rocky-linux/gstreamer1-plugins-good?distro=rocky-linux-10\u0026epoch=0","source":"RLSA-2026:53451"},{"ecosystem":"Rocky Linux:9","fixed":["0:1.22.12-7.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"gstreamer1-plugins-good","purl":"pkg:rpm/rocky-linux/gstreamer1-plugins-good?distro=rocky-linux-9\u0026epoch=0","source":"RLSA-2026:53452"}],"prev":{"headline":"Blix Email Blue Mail Calendar App react-native-receive-sharing-intent FileDirectory.getFileFromUri path traversal","id":"CVE-2026-18648"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 10.0 Extended Update Support","Red Hat Enterprise Linux 7 Extended Lifecycle Support","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support","Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On","Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support","Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On","Red Hat Enterprise Linux 8.8 Telecommunications Update Service","Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions","Red Hat Enterprise Linux 9","Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.6 Extended Update Support"],"published":"2026-08-06","related":[],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"BSD","name":"Rocky Linux","prefix":"RLSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-23","vendors":["Red Hat"]},"summary":"Remote attackers can cause denial of service in GStreamer applications by sending fragmented RTP packets that exhaust memory due to missing size limits in H.264/H.265 depayloaders.","url":"https://insights.sbomify.com/CVE-2026-18649/"}