{"answers":{"affected":"4 open source packages ship an affected version, including phpbb/phpbb. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-29199 in the wild and no public exploit code.","fix":"Upgrade phpbb/phpbb to a fixed version for your release line: 3.3.16 or 4.0.0-a2.","what":"CVE-2026-29199 is a high-severity vulnerability in phpBB, published on 4 May 2026. 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-2026-29199 and fix it if it is affected.\n\nWhat it is: CVE-2026-29199 is a high-severity vulnerability in phpBB, published on 4 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-29199 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- phpbb/phpbb (Packagist): affected from 3.0.0; fixed in 3.3.16\n- phpbb/phpbb (Packagist): affected from 3.0.0; fixed in 3.3.16\n- phpbb/phpbb (Packagist): affected from 4.0.0-a1; fixed in 4.0.0-a2\n- phpbb/phpbb (Packagist): affected from 4.0.0-a1; fixed in 4.0.0-a2\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-2026-29199/ (Markdown: https://insights.sbomify.com/CVE-2026-29199/index.md)","id":"CVE-2026-29199","markdown":"https://insights.sbomify.com/CVE-2026-29199/index.md","name":"CVE-2026-29199","record":{"aliases":["GHSA-7gm6-w7mx-58cr"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":true,"product_category":"phpBB forum software","requires_auth":"none","summary":"Attackers can poison password reset links via Host Header Injection to take over user accounts when server variable forcing is disabled.","user_interaction":"required","vuln_class":"open_redirect"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[{"product":"phpbb","vendor":"phpbb"}],"cvss":{"score":8.1,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-640","name":"Weak Password Recovery Mechanism for Forgotten Password"}],"description":"phpBB before 3.3.16 is vulnerable to Host Header Injection that can lead to password rest link poisoning. When force_server_vars is disabled, the servers hostname may be extracted from the HTTP Host header which is used to generate the password reset link URL. An attacker who can manipulate the Host header (e.g. through misconfigured host setup or missing header validation by the webserver) can cause password reset emails to contain a link pointing to an attacker-controlled domain, potentially leading to account takeover.","ecosystems":["Packagist"],"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":"phpBB has Password Reset Link Poisoning via Host Header injection","id":"CVE-2026-29199","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"open_redirect","year":"2026"},"n_packages":4,"n_references":1,"next":{"headline":"Auth bypass in Comet Backup","id":"CVE-2026-29200"},"packages":[{"ecosystem":"Packagist","fixed":["3.3.16"],"introduced":["3.0.0"],"last_affected":[],"package":"phpbb/phpbb","purl":null,"source":"GHSA-7gm6-w7mx-58cr"},{"ecosystem":"Packagist","fixed":["3.3.16"],"introduced":["3.0.0"],"last_affected":[],"package":"phpbb/phpbb","purl":"pkg:composer/phpbb/phpbb","source":"GHSA-7gm6-w7mx-58cr"},{"ecosystem":"Packagist","fixed":["4.0.0-a2"],"introduced":["4.0.0-a1"],"last_affected":[],"package":"phpbb/phpbb","purl":null,"source":"GHSA-7gm6-w7mx-58cr"},{"ecosystem":"Packagist","fixed":["4.0.0-a2"],"introduced":["4.0.0-a1"],"last_affected":[],"package":"phpbb/phpbb","purl":"pkg:composer/phpbb/phpbb","source":"GHSA-7gm6-w7mx-58cr"}],"prev":{"headline":"SQL injection in Rocket.Chat","id":"CVE-2026-29198"},"products":["phpBB"],"published":"2026-05-04","related":[{"cvss_score":10,"headline":"Other in n/a","id":"CVE-2008-3224","kev_date_added":null,"published":"2008-07-18"},{"cvss_score":10,"headline":"Multiple unspecified vulnerabilities in phpBB before 3.0.1 have unknown impact and attack vectors, related to \"two minor security-related bu","id":"CVE-2008-1766","kev_date_added":null,"published":"2008-04-12"},{"cvss_score":8.8,"headline":"Cross-site request forgery in n/a","id":"CVE-2025-70810","kev_date_added":null,"published":"2026-04-09"},{"cvss_score":8.8,"headline":"Code injection in n/a","id":"CVE-2001-1471","kev_date_added":null,"published":"2005-04-21"},{"cvss_score":7.5,"headline":"phpBB arbitrary CSS injection","id":"CVE-2019-16108","kev_date_added":null,"published":"2020-03-19"},{"cvss_score":7.5,"headline":"phpBB Denial of Service","id":"CVE-2019-9826","kev_date_added":null,"published":"2019-05-02"}],"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":"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":"total"},"state":"PUBLISHED","updated":"2026-05-04","vendors":["phpBB"]},"summary":"Attackers can poison password reset links via Host Header Injection to take over user accounts when server variable forcing is disabled.","url":"https://insights.sbomify.com/CVE-2026-29199/"}