SARA / Free Tools / CVE / CVE-2022-45403

CVE-2022-45403 — Service Workers should not be able to infer information about opaque cross-origi

Service Workers should not be able to infer information about opaque cross-origin responses; but timing information for cross-origin media combined with Range requests might have allowed them to determine the presence or length of a media file. This vulnerability affects Firefox

CVSS
— —
EPSS
0.19% (top 59.70%)
CWE
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Published
2022-12-22T00:00:00.000Z
Last modified
2025-04-15T15:17:44.068Z
CVSS vector
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01What is this vulnerability?

Service Workers should not be able to infer information about opaque cross-origin responses; but timing information for cross-origin media combined with Range requests might have allowed them to determine the presence or length of a media file. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.

02Affected products

VendorProductVersions
MozillaFirefox ESRunspecified
MozillaThunderbirdunspecified
MozillaFirefoxunspecified

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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