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For MD5, this means that it is theoretically possible, and even practical, to find two distinct cache keys that result in the same MD5 hash. This vulnerability has been well-documented and exploited in various security contexts.\n\n### Implications for Cache Systems\nIn a cache system where filenames are derived from the MD5 hash of cache keys, a collision could lead to several critical issues:\n\nData Integrity Risks: If two different keys collide, they will map to the same filename. This could result in data being overwritten incorrectly, leading to data loss or corruption.\nSecurity Vulnerabilities: An attacker could potentially exploit collisions to manipulate cache data. For instance, by crafting a key that collides with another key, an attacker might gain unauthorized access to sensitive cached information or inject malicious data.\n\nUnpredictable Behavior: Collisions can cause the cache system to behave unpredictably, as it may retrieve or store data in unintended files, leading to system instability or incorrect behavior.\n\n### Mitigation Strategies\nTo mitigate these risks, consider the following strategies:\n\nUse a More Secure Hash Function: Replace MD5 with a more secure hash function like SHA-256, which has a significantly lower probability of collisions and is resistant to known attack vectors.\n\ncode at:https://github.com/beego/beego/blob/bb72dc27ac3970e51d38ee52fc3dc1465ae25b9d/client/cache/file.go#L126","state":0,"publishedAt":"2024-12-12T19:22:39+00:00","modifiedAt":"2026-09-10T03:50:56.131584+00:00","affected":[{"ecosystem":"Go","name":"github.com/beego/beego","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"last_affected","version":"1.12.14"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/beego/beego/v2","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2.3.4"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/beego/beego/security/advisories/GHSA-9j3m-fr7q-jxfw","https://nvd.nist.gov/vuln/detail/CVE-2024-55885","https://github.com/beego/beego/commit/e7fa4835f71f47ab1d13afd638cebf661800d5a4","https://github.com/beego/beego"],"sourceUrl":"https://github.com/advisories/GHSA-9j3m-fr7q-jxfw","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-9j3m-fr7q-jxfw","identifiers":["GHSA-9j3m-fr7q-jxfw","CVE-2024-55885","GO-2024-3331"]},"retained":false,"historicalAffected":[]},{"revision":"3a5bed6523d544f3b0e28fa6d4639c05","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2024-3331","aliases":["CVE-2024-55885","GHSA-9j3m-fr7q-jxfw"],"title":"Beego has Collision Hazards of MD5 in Cache Key Filenames in github.com/beego/beego","description":"Beego has Collision Hazards of MD5 in Cache Key Filenames in github.com/beego/beego","state":0,"publishedAt":"2024-12-18T16:35:36+00:00","modifiedAt":"2026-02-04T02:21:25.221803+00:00","affected":[{"ecosystem":"Go","name":"github.com/beego/beego","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/beego/beego/v2","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2.3.4"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/beego/beego/security/advisories/GHSA-9j3m-fr7q-jxfw","https://github.com/beego/beego/commit/e7fa4835f71f47ab1d13afd638cebf661800d5a4"],"sourceUrl":"https://osv.dev/vulnerability/GO-2024-3331","license":"OSV · upstream source license applies","key":"osv:GO-2024-3331","identifiers":["GO-2024-3331","CVE-2024-55885","GHSA-9j3m-fr7q-jxfw"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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