CVE-2017-7844: Mozilla Firefox vulnerability

CVE-2017-7844: A combination of an external SVG image referenced on a page and the coloring of anchor links stored within...

A combination of an external SVG image referenced on a page and the coloring of anchor links stored within this image can be used to determine which pages a user has in their history. This can allow a malicious website to query user history. Note: This issue only affects Firefox 57. Earlier releases are not affected. This vulnerability affects Firefox < 57.0.1.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 16:19 UTC (UTC+00:00)

Security readout for executives and security teams

A malicious website could use a Firefox 57 browser behavior to infer parts of a user's browsing history. This is a privacy exposure, not evidence of system takeover. The source says earlier Firefox releases were not affected and Firefox before 57.0.1 is listed as vulnerable. Exposure is most likely limited to legacy systems still running Mozilla Firefox 57 or otherwise below 57.0.1. Modern supported Firefox deployments are unlikely to be affected based on the provided version statement. Treat as low urgency unless legacy Firefox remains in production. The business impact is privacy leakage of browsing history, with no source evidence of code execution or active exploitation. Mitigation focus: Upgrade Firefox to 57.0.1 or later.; Retire unsupported Firefox 57 installations.; Check Mozilla advisory MFSA2017-27 for vendor guidance..

Prepared: Jun 7, 2026, 06:44 UTC (UTC+00:00)

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

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jun 11, 2018, 21:00 UTC (UTC+00:00)

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

CVE List V5 sourceCVE List V5
https://www.mozilla.org/security/advisories/mfsa2017-27/CVE reference · x_refsource_CONFIRM
https://bugzilla.mozilla.org/show_bug.cgi?id=1420001CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

MozillaFirefoxunspecifiedListed

Weakness

CWE details

No CWE listed

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