CVE-2011-5239: n/a vulnerability

CVE-2011-5239: CiviCRM 4.0.5 and 4.1.1 does not verify that the server hostname matches a domain name in the subject's Com...

CiviCRM 4.0.5 and 4.1.1 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 17, 2024, 03:58 UTC (UTC+00:00)

Security readout for executives and security teams

CiviCRM 4.0.5 and 4.1.1 reportedly failed to verify that an HTTPS certificate actually belonged to the server being contacted. A network-positioned attacker could impersonate an SSL server using any otherwise valid certificate. This matters where the affected CiviCRM instance sends or receives sensitive data over HTTPS. Exposure is limited to CiviCRM 4.0.5 and 4.1.1 per the CVE description. Risk is highest where those versions make HTTPS connections carrying credentials, payment, donor, membership, or administrative data over networks an attacker could intercept. Treat this as a targeted legacy-software risk. It is not documented as actively exploited, but it could expose sensitive business, donor, payment, or administrative data if old CiviCRM versions remain in use on interceptable networks. Mitigation focus: Inventory CiviCRM deployments and identify versions 4.0.5 or 4.1.1.; Check current CiviCRM guidance for the fixed version or recommended remediation.; Prioritize migration from unsupported legacy CiviCRM releases to a supported release..

Prepared: Jun 24, 2026, 12:04 UTC (UTC+00:00)

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

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Nov 6, 2012, 11:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

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1Source links

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Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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