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CVE Record

CVE-2013-7343: Cross-site scripting (XSS) vulnerability in flowplayer.swf in the Flash fallback feature in Flowplayer HTML...

Cross-site scripting (XSS) vulnerability in flowplayer.swf in the Flash fallback feature in Flowplayer HTML5 5.4.3 allows remote attackers to inject arbitrary web script or HTML by using URL encoding within the callback parameter name. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-7342.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This CVE is an older cross-site scripting issue in Flowplayer HTML5 5.4.3’s Flash fallback file, flowplayer.swf. A crafted callback parameter name could cause attacker-controlled script or HTML to run in a user’s browser. The source data does not provide a CVSS score, affected CPEs, or evidence of active exploitation.

Executive priority

Prioritize this where legacy public websites or archived media pages remain online. The business risk is browser-side script execution, but urgency depends on whether the vulnerable Flowplayer Flash fallback is still exposed. No active exploitation is documented in the supplied sources.

Technical view

CVE-2013-7343 affects the Flash fallback feature in Flowplayer HTML5 5.4.3. The issue is XSS through URL encoding within the callback parameter name in flowplayer.swf. The record notes it exists because CVE-2013-7342 was incompletely fixed. Public references include a Flowplayer GitHub issue and commit.

Likely exposure

Exposure is most likely on legacy web properties that still host or reference Flowplayer HTML5 5.4.3 and its Flash fallback flowplayer.swf. Organizations without Flash-era media assets are less likely to be affected, but static files and old embedded players should be checked.

Exploitation context

The supplied sources describe remote attacker XSS through a crafted callback parameter name. They do not state active exploitation, and CISA KEV status is false. Treat this as a legacy client-side exposure until asset review confirms whether the affected SWF remains reachable.

Researcher notes

The record lacks CVSS, CWE, CPE, and fixed-version detail. The key technical clue is URL encoding in the callback parameter name, tied to an incomplete CVE-2013-7342 fix. Research should focus on asset presence, reachability, and whether the linked upstream change is applied.

Mitigation direction

  • Inventory public sites for Flowplayer HTML5 5.4.3 and flowplayer.swf.
  • Check Flowplayer's linked issue and commit for the corrected patch or release.
  • Remove or disable the Flash fallback if it is no longer required.
  • Retire legacy SWF assets from public web paths where possible.
  • Apply vendor guidance before relying on compensating controls.

Validation and detection

  • Search deployed static assets for flowplayer.swf references.
  • Review dependency records for Flowplayer HTML5 5.4.3 usage.
  • Confirm old media pages no longer load the Flash fallback.
  • Use safe XSS testing to verify callback handling is corrected.
  • Check access logs for unexpected requests to legacy Flowplayer SWF files.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2013-7343 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.