Webex MeetingsApplication · Cisco
CVE-2023-20132
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedMultiple vulnerabilities in the web interface of Cisco Webex Meetings could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack or upload arbitrary files as recordings. For more information about these vulnerabilities, see the Details section of this advisory.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceCisco Webex Meetings web interface contains multiple vulnerabilities allowing an authenticated remote attacker to conduct stored XSS attacks and upload arbitrary files disguised as recordings. The stored XSS enables persistent script injection affecting other users, while the file upload flaw could allow execution of malicious content.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
Webex MeetingsApplication
all versionsCVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Cisco Webex Meetings installationCheck for Webex Meetings services or web applications running in the environment by reviewing installed software, running processes, or network services listening on common Webex ports (typically 443, 80 for the web interface)Affected if Cisco Webex Meetings is present and accessible in the environment
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Verify file upload capability is enabledAccess the Webex Meetings web interface and navigate to the recording upload or meeting management section to confirm if file upload functionality is available to authenticated usersAffected if File upload features are accessible to authenticated users without additional restrictions
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Inspect uploaded recording filesReview the recordings directory or storage location used by Webex Meetings for any unusual file types, unexpected extensions, or files that do not match expected recording formats (such as .wrf, .mp4, .arF)Affected if Suspicious files with executable extensions (.php, .asp, .exe, .js) or unexpected MIME types are found in the recordings storage area
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Review web access logs for exploitation indicatorsExamine Webex Meetings web server logs for requests containing script injection patterns in user-modifiable fields (such as meeting names, user profiles, or recording titles) or unusual upload requestsAffected if Logs contain requests with HTML script tags, JavaScript code, or abnormal upload endpoints being accessed
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Check for persistent XSS payloads in user dataQuery the Webex Meetings database or user content storage for stored XSS payloads by searching for HTML script tags, javascript: URIs, or event handler attributes in user-created content fieldsAffected if User-generated content in the database contains malicious script injections that would execute when viewed by other users
The environment is affected if Cisco Webex Meetings is present and the file upload or user content submission features are accessible to authenticated users, since all versions are vulnerable.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply Cisco-supplied patches when available; disable or restrict file upload capabilities in Webex Meetings until patched; implement content security policy headers to mitigate XSS impact.
Fix this in Webex Meetings
Scoped from the published advisory
- Consultation3.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,832.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-20132 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-20132 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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