{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-61548 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-61548 is a high-severity memory corruption vulnerability in rsyslog, published on 18 Sep 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-2026-61548 and fix it if it is affected.\n\nWhat it is: CVE-2026-61548 is a high-severity memory corruption vulnerability in rsyslog, published on 18 Sep 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-2026-61548 in the wild and no public exploit code.\n\nAffected product: rsyslog. 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-2026-61548/ (Markdown: https://insights.sbomify.com/CVE-2026-61548/index.md)","id":"CVE-2026-61548","markdown":"https://insights.sbomify.com/CVE-2026-61548/index.md","name":"CVE-2026-61548","record":{"aliases":["AZL-103314","DEBIAN-CVE-2026-61548","GHSA-8qmr-c66f-g368","SUSE-SU-2026:23122-1","SUSE-SU-2026:23145-1","SUSE-SU-2026:3442-1","SUSE-SU-2026:3478-1","SUSE-SU-2026:3498-1","SUSE-SU-2026:3518-1","UBUNTU-CVE-2026-61548","USN-8598-1","openSUSE-SU-2026:11407-1","openSUSE-SU-2026:21535-1"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Rsyslog logging server","requires_auth":"none","summary":"Remote attackers can cause a denial of service in Rsyslog by sending oversized RFC5424 messages to the optional mmpstrucdata plugin.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-121","name":"Stack-based Buffer Overflow"}],"description":"Rsyslog is a rocket-fast system for log processing. From 7.5.4 until 8.2606.0, the optional mmpstrucdata plugin's parseSD_PARAM function in plugins/mmpstrucdata/mmpstrucdata.c stores RFC5424 parameter values in a fixed pVal[32 * 1024] stack buffer and calls parsePARAM_VALUE without supplying the destination size. A remote unauthenticated attacker whose crafted RFC5424 message reaches an action using mmpstrucdata can provide a structured-data parameter larger than that buffer when MaxMessageSize permits it, causing an attacker-controlled stack overwrite. Deployments that do not install and use the plugin, or whose effective message-size limit remains below the required threshold, are not affected by this issue. The demonstrated impact is a crash and interruption of log collection; code execution is not demonstrated. This issue is fixed in version 8.2606.0.","ecosystems":["SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS","SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS","SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS","SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS","SUSE:Linux Enterprise Module for Basesystem 15 SP7","SUSE:Linux Enterprise Module for Package Hub 15 SP7","SUSE:Linux Enterprise Module for Server Applications 15 SP7","SUSE:Linux Enterprise Server 12 SP5-LTSS","SUSE:Linux Enterprise Server 15 SP4-LTSS","SUSE:Linux Enterprise Server 15 SP5-LTSS","SUSE:Linux Enterprise Server 15 SP6-LTSS","SUSE:Linux Enterprise Server 16.0","SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5","SUSE:Linux Enterprise Server for SAP Applications 15 SP4","SUSE:Linux Enterprise Server for SAP Applications 15 SP5","SUSE:Linux Enterprise Server for SAP Applications 15 SP6","SUSE:Linux Enterprise Server for SAP applications 16.0","openSUSE:Leap 16.0","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Rsyslog: mmpstrucdata stack buffer overflow with oversized RFC5424 structured data","id":"CVE-2026-61548","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":21,"n_references":4,"next":{"headline":"Woodpecker: Privilege escalation via unrestricted serviceAccountName in the Kubernetes backend","id":"CVE-2026-61549"},"packages":[{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS","fixed":["8.2306.0-150400.5.40.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS","source":"SUSE-SU-2026:3518-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS","fixed":["8.2306.0-150400.5.40.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS","source":"SUSE-SU-2026:3518-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS","fixed":["8.2306.0-150400.5.40.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS","source":"SUSE-SU-2026:3518-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS","fixed":["8.2306.0-150400.5.40.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSS","source":"SUSE-SU-2026:3518-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP7","fixed":["8.2406.0-150700.3.7.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7","source":"SUSE-SU-2026:3478-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Package Hub 15 SP7","fixed":["8.2406.0-150700.3.7.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7","source":"SUSE-SU-2026:3478-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Server Applications 15 SP7","fixed":["8.2406.0-150700.3.7.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP7","source":"SUSE-SU-2026:3478-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP5-LTSS","fixed":["8.2106.0-8.22.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSS","source":"SUSE-SU-2026:3498-1"},{"ecosystem":"SUSE:Linux Enterprise Server 15 SP4-LTSS","fixed":["8.2306.0-150400.5.40.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS","source":"SUSE-SU-2026:3518-1"},{"ecosystem":"SUSE:Linux Enterprise Server 15 SP5-LTSS","fixed":["8.2306.0-150400.5.40.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS","source":"SUSE-SU-2026:3518-1"},{"ecosystem":"SUSE:Linux Enterprise Server 15 SP6-LTSS","fixed":["8.2406.0-150600.12.16.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSS","source":"SUSE-SU-2026:3442-1"},{"ecosystem":"SUSE:Linux Enterprise Server 16.0","fixed":["8.2502.0-160000.4.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Server%2016.0","source":"SUSE-SU-2026:23122-1"},{"ecosystem":"SUSE:Linux Enterprise Server 16.0","fixed":["8.2502.0-160000.4.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Server%2016.0","source":"SUSE-SU-2026:23145-1"},{"ecosystem":"SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5","fixed":["8.2106.0-8.22.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5","source":"SUSE-SU-2026:3498-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP4","fixed":["8.2306.0-150400.5.40.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4","source":"SUSE-SU-2026:3518-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP5","fixed":["8.2306.0-150400.5.40.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5","source":"SUSE-SU-2026:3518-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP6","fixed":["8.2406.0-150600.12.16.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6","source":"SUSE-SU-2026:3442-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP applications 16.0","fixed":["8.2502.0-160000.4.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0","source":"SUSE-SU-2026:23122-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP applications 16.0","fixed":["8.2502.0-160000.4.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/suse/rsyslog\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0","source":"SUSE-SU-2026:23145-1"},{"ecosystem":"openSUSE:Leap 16.0","fixed":["8.2502.0-160000.4.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/opensuse/rsyslog\u0026distro=openSUSE%20Leap%2016.0","source":"openSUSE-SU-2026:21535-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["8.2606.0-1.1"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/opensuse/rsyslog\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:11407-1"}],"prev":{"headline":"AnkiMCP: DNS rebinding reaches unauthenticated local AnkiMCP HTTP tools","id":"CVE-2026-61546"},"products":["rsyslog"],"published":"2026-09-18","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-21","vendors":["rsyslog"]},"summary":"Remote attackers can cause a denial of service in Rsyslog by sending oversized RFC5424 messages to the optional mmpstrucdata plugin.","url":"https://insights.sbomify.com/CVE-2026-61548/"}