CVE-2016-9847: n/a vulnerability

CVE-2016-9847: An issue was discovered in phpMyAdmin.

An issue was discovered in phpMyAdmin. When the user does not specify a blowfish_secret key for encrypting cookies, phpMyAdmin generates one at runtime. A vulnerability was reported where the way this value is created uses a weak algorithm. This could allow an attacker to determine the user's blowfish_secret and potentially decrypt their cookies. All 4.6.x versions (prior to 4.6.5), 4.4.x versions (prior to 4.4.15.9), and 4.0.x versions (prior to 4.0.10.18) are affected.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 02:59 UTC (UTC+00:00)

Security readout for executives and security teams

phpMyAdmin could create a weak cookie-encryption secret when administrators left blowfish_secret unset. If an attacker determined that secret, they could potentially decrypt phpMyAdmin cookies. The issue affects older 4.6, 4.4, and 4.0 release lines before the fixed versions. Exposure is most likely in legacy phpMyAdmin deployments where blowfish_secret was not explicitly configured. Internet-accessible administration panels increase business risk, but the provided sources do not identify affected hosting stacks beyond phpMyAdmin versions. Treat this as a legacy administration-plane exposure. Prioritize systems that are internet-facing, shared-hosted, or protect sensitive databases, but do not represent it as known exploited based on this bundle. Mitigation focus: Upgrade phpMyAdmin to a fixed version or later for the deployed branch.; Set a strong explicit blowfish_secret instead of relying on runtime generation.; Use distribution vendor updates where phpMyAdmin is package-managed..

Prepared: Jun 13, 2026, 13:16 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: Dec 11, 2016, 02:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

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.phpmyadmin.net/security/PMASA-2016-58CVE reference · x_refsource_CONFIRM
GLSA-201701-32CVE reference · vendor-advisory, x_refsource_GENTOO

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

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