CVE-2017-5385: Mozilla Firefox vulnerability

CVE-2017-5385: Data sent with in multipart channels, such as the multipart/x-mixed-replace MIME type, will ignore the refe...

Data sent with in multipart channels, such as the multipart/x-mixed-replace MIME type, will ignore the referrer-policy response header, leading to potential information disclosure for sites using this header. This vulnerability affects Firefox < 51.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 14:55 UTC (UTC+00:00)

Security readout for executives and security teams

Firefox versions before 51 could ignore a site’s Referrer-Policy header for multipart responses. That could expose referrer information a site intended to suppress. The issue is narrow and tied to legacy Firefox, but it matters where privacy-sensitive URLs or internal paths could leak through browser requests. Exposure is most likely on endpoints or embedded browser stacks still running Firefox before 51. Organizations using currently supported Firefox releases are unlikely to be exposed based on the affected-version boundary in the sources. Treat this as legacy-browser hygiene with privacy impact. It is not supported as actively exploited, but outdated Firefox on managed endpoints should be removed or upgraded because it can undermine privacy controls on sensitive web applications. Mitigation focus: Upgrade Firefox to version 51 or later, preferably a supported current release.; Remove or isolate legacy Firefox installations from enterprise endpoints.; Review Mozilla MFSA2017-01 for vendor-confirmed remediation details..

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://bugzilla.mozilla.org/show_bug.cgi?id=1295945CVE reference · x_refsource_CONFIRM
https://www.mozilla.org/security/advisories/mfsa2017-01/CVE 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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