CVE-2022-22755

HIGH

8.8

CVSS Score

Published: December 22, 2022 at 12:00 AM UTC

Updated: June 17, 2026 at 04:28 AM UTC

1 product affected across 1 vendorFirefox

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Severity

HIGH8.8

Exploit prediction

EPSS 0.6%

SSVC

PoC

Description

By using XSL Transforms, a malicious webserver could have served a user an XSL document that would continue to execute JavaScript (within the bounds of the same-origin policy) even after the tab was closed. This vulnerability affects Firefox < 97.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Firefox · Mozilla

95%

v < 97

Affected range stops below 97, so it looks safe — our inference, not a vendor statement

Affected range stops below 97.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Issue TrackingVendor Advisory

Source: [email protected]

https://bugzilla.mozilla.org/show_bug.cgi?id=1309630

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2022-04/

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-672

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