{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-123523 exists.","exposure":"","fix":"No fix has been published for CVE-2026-123523 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-123523 is a high-severity vulnerability in go-vikunja vikunja, published on 8 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-123523 and fix it if it is affected.\n\nWhat it is: CVE-2026-123523 is a high-severity vulnerability in go-vikunja vikunja, published on 8 Nov 2026. \nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-123523 exists.\n\nAffected product: go-vikunja vikunja. 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-2026-123523/ (Markdown: https://insights.sbomify.com/CVE-2026-123523/index.md)","id":"CVE-2026-123523","markdown":"https://insights.sbomify.com/CVE-2026-123523/index.md","name":"CVE-2026-123523","record":{"aliases":["GHSA-3x3m-2j93-w46j","GHSA-w5pw-69q7-rf8x"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"Vikunja before 2.7.1 contains an uncontrolled resource consumption vulnerability that allows authenticated users to exhaust server memory by requesting avatars at many distinct sizes. Attackers can upload a noisy avatar and fetch it at each size up to 1024, caching roughly a gigabyte per account without eviction and causing the API process to be OOM-killed.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Vikunja before 2.7.1 Memory Exhaustion via Unbounded Avatar Size Cache","id":"CVE-2026-123523","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Vikunja 0.23.0 before 2.7.1 Information Disclosure via Webhook related_tasks Payload","id":"CVE-2026-123524"},"nickname":null,"packages":[],"prev":{"headline":"Vikunja before 2.7.1 Task Information Disclosure via Kanban Bucket Move Webhook","id":"CVE-2026-123522"},"products":["vikunja"],"published":"2026-11-08","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-11-12","vendors":["go-vikunja"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-123523/"}