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In express <4.20.0, passing untrusted user input - even after sanitizing it - to response.redirect() may execute untrusted code
Patches
this issue is patched in express 4.20.0
Workarounds
users are encouraged to upgrade to the patched version of express, but otherwise can workaround this issue by making sure any untrusted inputs are safe, ideally by validating them against an explicit allowlist
Details
successful exploitation of this vector requires the following:
The attacker MUST control the input to response.redirect()
express MUST NOT redirect before the template appears
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This PR contains the following updates:
4.17.1->4.20.0Warning
Some dependencies could not be looked up. Check the warning logs for more information.
GitHub Vulnerability Alerts
CVE-2024-43796
Impact
In express <4.20.0, passing untrusted user input - even after sanitizing it - to
response.redirect()may execute untrusted codePatches
this issue is patched in express 4.20.0
Workarounds
users are encouraged to upgrade to the patched version of express, but otherwise can workaround this issue by making sure any untrusted inputs are safe, ideally by validating them against an explicit allowlist
Details
successful exploitation of this vector requires the following:
Release Notes
expressjs/express (express)
v4.20.0Compare Source
==========
depthoption to customize the depth level in the parserdepthlevel for parsing URL-encoded data is now32(previously wasInfinity)res.redirect\,|, and^to align better with URL specoptions.maxAgeandoptions.expirestores.clearCookiev4.19.2Compare Source
==========
v4.19.1Compare Source
==========
v4.19.0Compare Source
==========
v4.18.3Compare Source
==========
partitionedoptionv4.18.2Compare Source
===================
v4.18.1Compare Source
===================
v4.18.0Compare Source
===================
res.downloadoptionswithoutfilenameinres.downloadres.statusnull/undefinedasmaxAgeinres.cookieObject.prototypevalues in settings throughapp.set/app.getdefaultwith same arguments as types inres.formatres.sendhttp-errorsforres.formaterrorstrictpriorityoptionexpiresoption to reject invalid datesevalusage withFunctionconstructorprocessto check for listeners425 Unordered Collectionto standard425 Too Earlyv4.17.3Compare Source
===================
__proto__keysv4.17.2Compare Source
===================
undefinedinres.jsonpundefinedwhen"json escape"is enabledRegExpsres.jsonp(obj, status)deprecation messageres.isJSDocmaxAgeoption to reject invalid valuesreq.socketover deprecatedreq.connectionConfiguration
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