CVE-2026-2016

A security vulnerability has been detected in happyfish100 libfastcommon up to 1.0.84. Affected by this vulnerability is the function base64_decode of the file src/base64.c. The manipulation leads to stack-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used. The identifier of the patch is 82f66af3e252e3e137dba0c3891570f085e79adf. Applying a patch is the recommended action to fix this issue.

CVSS v3 5.3 MEDIUM
CVSS v2.0 4.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 3.1 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/happyfish100/libfastcommon/	Product
https://github.com/happyfish100/libfastcommon/commit/82f66af3e252e3e137dba0c3891570f085e79adf	Patch
https://github.com/happyfish100/libfastcommon/issues/55	Exploit Vendor Advisory
https://github.com/happyfish100/libfastcommon/issues/55#issue-3836362577	Exploit Vendor Advisory
https://github.com/happyfish100/libfastcommon/issues/55#issuecomment-3776757848	Exploit Vendor Advisory
https://vuldb.com/?ctiid.344598	Permissions Required VDB Entry
https://vuldb.com/?id.344598	Third Party Advisory VDB Entry
https://vuldb.com/?submit.743873	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:happyfish100:libfastcommon:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-06 12:16

Updated : 2026-06-17 10:30

NVD link : CVE-2026-2016

Mitre link : CVE-2026-2016

CVE.ORG link : CVE-2026-2016

JSON object : View

Products Affected

happyfish100

libfastcommon

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-121

Stack-based Buffer Overflow

CWE-787

Out-of-bounds Write

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Affected by this vulnerability is the function base64_decode of the file src/base64.c. The manipulation leads to stack-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used. The identifier of the patch is 82f66af3e252e3e137dba0c3891570f085e79adf. Applying a patch is the recommended action to fix this issue."}, {"lang": "es", "value": "Se ha detectado una vulnerabilidad de seguridad en happyfish100 libfastcommon hasta la versi\u00f3n 1.0.84. Afectada por esta vulnerabilidad es la funci\u00f3n base64_decode del archivo src/base64.c. La manipulaci\u00f3n conduce a un desbordamiento de b\u00fafer basado en pila. Se requiere acceso local para abordar este ataque. El exploit ha sido divulgado p\u00fablicamente y puede ser utilizado. El identificador del parche es 82f66af3e252e3e137dba0c3891570f085e79adf. Aplicar un parche es la acci\u00f3n recomendada para solucionar este problema."}], "lastModified": "2026-06-17T10:30:00.997", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:happyfish100:libfastcommon:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C75F73CF-18BB-4FE5-9440-693DD0E92FFF", "versionEndIncluding": "1.0.84"}], "operator": "OR"}]}], "sourceIdentifier": "cna@vuldb.com"}