CVE-2009-0357: n/a vulnerability

CVE-2009-0357: Mozilla Firefox before 3.0.6 and SeaMonkey before 1.1.15 do not properly restrict access from web pages to...

Mozilla Firefox before 3.0.6 and SeaMonkey before 1.1.15 do not properly restrict access from web pages to the (1) Set-Cookie and (2) Set-Cookie2 HTTP response headers, which allows remote attackers to obtain sensitive information from cookies via XMLHttpRequest calls, related to the HTTPOnly protection mechanism.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 04:31 UTC (UTC+00:00)

Security readout for executives and security teams

This issue affected very old Mozilla browsers. A malicious web page could read cookie-setting response headers that HTTPOnly was meant to hide, potentially exposing session or authentication cookie data. The main business risk is legacy browser exposure, not modern browser estates. Exposure is most likely in legacy desktops, embedded systems, kiosks, or old Linux distributions still shipping affected Firefox or SeaMonkey builds. Current mainstream browser deployments should not be assumed affected from these sources alone. Treat as a legacy hygiene issue unless affected browsers are present. If legacy Mozilla browsers remain in operational environments, prioritize removal or upgrade because cookie exposure can support account compromise. Mitigation focus: Upgrade Firefox to 3.0.6 or later where applicable.; Upgrade SeaMonkey to 1.1.15 or later where applicable.; Apply relevant operating system vendor browser updates..

Prepared: Jun 28, 2026, 11:23 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: Feb 4, 2009, 19:00 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

5Source 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
FEDORA-2009-3101CVE reference · vendor-advisory, x_refsource_FEDORA
https://bugzilla.mozilla.org/show_bug.cgi?id=380418CVE reference · x_refsource_CONFIRM
oval:org.mitre.oval:def:9459CVE reference · vdb-entry, signature
FEDORA-2009-1399CVE reference · vendor-advisory, x_refsource_FEDORA

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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