{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-25980 exists.","fix":"No fix has been published for CVE-2021-25980 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-25980 is a high-severity vulnerability in debiki talkyard, published on 11 Nov 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-25980 and fix it if it is affected.\n\nWhat it is: CVE-2021-25980 is a high-severity vulnerability in debiki talkyard, published on 11 Nov 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-25980 exists.\n\nAffected product: debiki talkyard. 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-2021-25980/ (Markdown: https://insights.sbomify.com/CVE-2021-25980/index.md)","id":"CVE-2021-25980","markdown":"https://insights.sbomify.com/CVE-2021-25980/index.md","name":"CVE-2021-25980","record":{"aliases":["GHSA-j8p2-hh7r-9r58"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Talkyard forum software","requires_auth":"none","summary":"An attacker can exploit Host Header Injection in Talkyard to reset a victim's password and take over their account via phishing links.","user_interaction":"required","vuln_class":"open_redirect"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Mend","cpe":[{"product":"talkyard","vendor":"talkyard"}],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"In Talkyard, versions v0.04.01 through v0.6.74-WIP-63220cb, v0.2020.22-WIP-b2e97fe0e through v0.2021.02-WIP-879ef3fe1 and tyse-v0.2021.02-879ef3fe1-regular through tyse-v0.2021.28-af66b6905-regular, are vulnerable to Host Header Injection. By luring a victim application-user to click on a link, an unauthenticated attacker can use the “forgot password” functionality to reset the victim’s password and successfully take over their account.","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":"Talkyard - Host-Header Injection Leads to Account Takeover","id":"CVE-2021-25980","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"open_redirect","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Talkyard - Insufficient Session Expiration","id":"CVE-2021-25981"},"packages":[],"prev":{"headline":"Apostrophe - Insufficient Session Expiration","id":"CVE-2021-25979"},"products":["talkyard"],"published":"2021-11-11","related":[{"cvss_score":9.8,"headline":"Talkyard - Insufficient Session Expiration","id":"CVE-2021-25981","kev_date_added":null,"published":"2022-01-03"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-04-30","vendors":["debiki"]},"summary":"An attacker can exploit Host Header Injection in Talkyard to reset a victim's password and take over their account via phishing links.","url":"https://insights.sbomify.com/CVE-2021-25980/"}