{"answers":{"affected":"6 open source packages ship an affected version, including github.com/sigstore/timestamp-authority and github.com/sigstore/timestamp-authority/v2. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-49835 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-49835 is a medium-severity denial of service vulnerability in sigstore timestamp-authority, published on 17 Jul 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-2026-49835 and fix it if it is affected.\n\nWhat it is: CVE-2026-49835 is a medium-severity denial of service vulnerability in sigstore timestamp-authority, published on 17 Jul 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-2026-49835 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/sigstore/timestamp-authority (Go): affected all versions; no fix listed\n- github.com/sigstore/timestamp-authority (Go): affected all versions up to 1.2.9; no fix listed\n- github.com/sigstore/timestamp-authority (Go): affected all versions up to 1.2.9; no fix listed\n- github.com/sigstore/timestamp-authority/v2 (Go): affected all versions; fixed in 2.1.0\n- github.com/sigstore/timestamp-authority/v2 (Go): affected all versions; fixed in 2.1.0\n- github.com/sigstore/timestamp-authority/v2 (Go): affected all versions; fixed in 2.1.0\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-2026-49835/ (Markdown: https://insights.sbomify.com/CVE-2026-49835/index.md)","id":"CVE-2026-49835","markdown":"https://insights.sbomify.com/CVE-2026-49835/index.md","name":"CVE-2026-49835","record":{"aliases":["CLEANSTART-2026-MR47110","CLEANSTART-2026-NV69611","CLEANSTART-2026-ZX16649","DEBIAN-CVE-2026-49835","GHSA-9c54-x2g4-v92j","GO-2026-5851","MINI-23c3-cf4v-6xpw","MINI-2772-pp3p-hcgx","MINI-28r7-gr5q-63rj","MINI-2hcr-h88g-4h2h","MINI-2mhp-gw8x-wh54","MINI-2rfv-mw4q-hc2f","MINI-2x8c-pgcm-r7x5","MINI-2xv8-7mvp-ffjc","MINI-3ph5-xx6w-2vj6","MINI-3q2r-cfhh-w4cr","MINI-3r87-396f-cq27","MINI-456h-9h3v-hch8","MINI-4gv8-x8cw-542x","MINI-4jh7-9cp6-vvrv","MINI-4vpp-8wcr-w6jh","MINI-4w6w-6v54-j4c8","MINI-5jp4-xhq9-g5r3","MINI-5pvr-8m2q-cqjx","MINI-6gv6-gvfg-wgp6","MINI-7793-73hf-jr8f","MINI-79wh-5864-g67x","MINI-7pf4-2qpx-5mj4","MINI-7vc7-m3vr-h7qc","MINI-868j-77h2-w22r","MINI-8fg2-gcp5-mffh","MINI-9fhw-pr3v-m525","MINI-9jq2-mv3j-rpv6","MINI-c5vx-v5mq-5qw2","MINI-f9h9-4gjg-2hw5","MINI-fxcf-2prj-92f2","MINI-g456-hwq4-6x6p","MINI-g7cg-8vmv-wx4r","MINI-h99x-6cph-5gx6","MINI-j63j-f63c-mjmx","MINI-j8x3-5p35-xrfp","MINI-jg46-wxwv-j57v","MINI-jr79-h58w-cw22","MINI-jvmx-7m7j-wrrp","MINI-m2pf-gq6v-52xh","MINI-mrr7-hjhx-7m62","MINI-mw23-7j6v-ghrm","MINI-mwqw-877m-j57r","MINI-p4qf-qf94-3f75","MINI-pcgg-q633-jm22","MINI-q55v-gf5r-hwpw","MINI-q6mf-cf9r-grwg","MINI-qmg7-h4pp-46jw","MINI-qx28-7qjp-6x4c","MINI-r24j-gxp5-rxf7","MINI-r3rq-8hrw-4gjj","MINI-r7m8-pwg8-h234","MINI-rf78-vgfg-6mm6","MINI-rhm2-m3rj-rfvc","MINI-v2vx-j3qh-2fp8","MINI-v4gc-f9hc-vmv8","MINI-v6vf-c53v-jqjg","MINI-vqmr-42jm-6r87","MINI-vrfc-4g73-h369","MINI-w392-3hrq-2gv8","MINI-w4mm-qgj8-6h66","MINI-w9f9-c5pj-x7v7","MINI-wjxq-2gvj-jg8h","MINI-wqpf-q548-xwh4","MINI-x4wh-9rx6-3rg6","MINI-x5j9-8422-599x","MINI-xpmr-2245-4fj2","UBUNTU-CVE-2026-49835"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Sigstore Timestamp Authority","requires_auth":"none","summary":"An unauthenticated attacker can exhaust server memory by sending requests with random paths and methods, causing a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"sigstore_timestamp_authority","vendor":"linuxfoundation"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/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":"Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Prior to 2.1.0, the global wrapMetrics middleware records raw HTTP request path r.URL.Path and raw HTTP request method r.Method as Prometheus labels for latency and request count metric vectors before routing, allowing an unauthenticated remote attacker to issue requests with random paths such as /api/v1/timestamp/\u003cuuid\u003e or random HTTP methods and create unbounded permanent time-series entries that exhaust memory. This issue is fixed in version 2.1.0.","ecosystems":["Go"],"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":"Sigstore Timestamp Authority: OOM due to unbounded metric label cardinality","id":"CVE-2026-49835","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":6,"n_references":3,"next":{"headline":"psd-tools: arbitrary file write via smart-object filename","id":"CVE-2026-49836"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/sigstore/timestamp-authority","purl":"pkg:golang/github.com/sigstore/timestamp-authority","source":"GO-2026-5851"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.2.9"],"package":"github.com/sigstore/timestamp-authority","purl":null,"source":"GHSA-9c54-x2g4-v92j"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.2.9"],"package":"github.com/sigstore/timestamp-authority","purl":"pkg:golang/github.com/sigstore/timestamp-authority","source":"GHSA-9c54-x2g4-v92j"},{"ecosystem":"Go","fixed":["2.1.0"],"introduced":["0"],"last_affected":[],"package":"github.com/sigstore/timestamp-authority/v2","purl":null,"source":"GHSA-9c54-x2g4-v92j"},{"ecosystem":"Go","fixed":["2.1.0"],"introduced":["0"],"last_affected":[],"package":"github.com/sigstore/timestamp-authority/v2","purl":"pkg:golang/github.com/sigstore/timestamp-authority/v2","source":"GHSA-9c54-x2g4-v92j"},{"ecosystem":"Go","fixed":["2.1.0"],"introduced":["0"],"last_affected":[],"package":"github.com/sigstore/timestamp-authority/v2","purl":"pkg:golang/github.com/sigstore/timestamp-authority/v2","source":"GO-2026-5851"}],"prev":{"headline":"sigstore-go: Multi-log threshold bypass via single compromised log","id":"CVE-2026-49834"},"products":["timestamp-authority"],"published":"2026-07-17","related":[{"cvss_score":7.5,"headline":"Sigstore Timestamp Authority allocates excessive memory during request parsing","id":"CVE-2025-66564","kev_date_added":null,"published":"2025-12-04"},{"cvss_score":5.5,"headline":"Sigstore Timestamp Authority has Improper Certificate Validation in verifier","id":"CVE-2026-39984","kev_date_added":null,"published":"2026-04-14"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"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":"partial"},"state":"PUBLISHED","updated":"2026-07-17","vendors":["sigstore"]},"summary":"An unauthenticated attacker can exhaust server memory by sending requests with random paths and methods, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2026-49835/"}