{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-25923 exists.","fix":"No fix has been published for CVE-2026-25923 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-25923 is a high-severity unsafe deserialization vulnerability in My-Little-Forum mylittleforum, published on 9 Feb 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-2026-25923 and fix it if it is affected.\n\nWhat it is: CVE-2026-25923 is a high-severity unsafe deserialization vulnerability in My-Little-Forum mylittleforum, published on 9 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-25923 exists.\n\nAffected product: My-Little-Forum mylittleforum. 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-2026-25923/ (Markdown: https://insights.sbomify.com/CVE-2026-25923/index.md)","id":"CVE-2026-25923","markdown":"https://insights.sbomify.com/CVE-2026-25923/index.md","name":"CVE-2026-25923","record":{"aliases":["GHSA-wr9p-3c3g-78fw"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"PHP forum software","requires_auth":"none","summary":"Attackers can delete arbitrary files by uploading a malicious Phar polyglot image and triggering deserialization via BBCode processing.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"my_little_forum","vendor":"mylittleforum"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"},{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"}],"description":"my little forum is a PHP and MySQL based internet forum that displays the messages in classical threaded view. Prior to 20260208.1, the application fails to filter the phar:// protocol in URL validation, allowing attackers to upload a malicious Phar Polyglot file (disguised as JPEG) via the image upload feature, trigger Phar deserialization through BBCode [img] tag processing, and exploit Smarty 4.1.0 POP chain to achieve arbitrary file deletion. This vulnerability is fixed in 20260208.1.","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":"Phar Deserialization leading to Arbitrary File Deletion in my little forum","id":"CVE-2026-25923","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"deserialization","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Kanboard is Missing Access Control on Plugin Installation leading to Administrative RCE","id":"CVE-2026-25924"},"packages":[],"prev":{"headline":"authentik has a Signature Verification Bypass via SAML Assertion Wrapping","id":"CVE-2026-25922"},"products":["mylittleforum"],"published":"2026-02-09","related":[{"cvss_score":7.5,"headline":"SQL injection in n/a","id":"CVE-2010-2133","kev_date_added":null,"published":"2010-06-02"},{"cvss_score":6.5,"headline":"my little forum before 2.4.20 allows CSRF to delete posts, as demonstrated by mode=posting\u0026delete_posting.","id":"CVE-2019-12253","kev_date_added":null,"published":"2019-05-21"},{"cvss_score":6.5,"headline":"Cross-site request forgery in n/a","id":"CVE-2018-15569","kev_date_added":null,"published":"2018-08-20"},{"cvss_score":6.5,"headline":"SQL injection in n/a","id":"CVE-2015-1434","kev_date_added":null,"published":"2015-02-16"},{"cvss_score":4.8,"headline":"Cross-site scripting in n/a","id":"CVE-2018-14936","kev_date_added":null,"published":"2018-08-05"},{"cvss_score":4.8,"headline":"Cross-site scripting in n/a","id":"CVE-2018-14937","kev_date_added":null,"published":"2018-08-05"}],"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-02-11","vendors":["My-Little-Forum"]},"summary":"Attackers can delete arbitrary files by uploading a malicious Phar polyglot image and triggering deserialization via BBCode processing.","url":"https://insights.sbomify.com/CVE-2026-25923/"}