CVE-2026-2016happyfish100 libfastcommon base64.c base64_decode stack-based overflow
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
- Weakness (CWE)
- CWE-121, CWE-119
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Analyzed
- Record last updated
- Feb 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
happyfish100 libfastcommon happyfish100:libfastcommon (from the name) | 1.0.0; 1.0.1; 1.0.2; 1.0.3; 1.0.4; 1.0.5; 1.0.6; 1.0.7; and 77 more ranges | CNA record |
happyfish100 libfastcommon happyfish100:libfastcommon | through 1.0.84 | NVD |
References
- https://vuldb.com/?id.344598vdb-entry, technical-description, third-party-advisory
- https://vuldb.com/?ctiid.344598signature, permissions-required, vdb-entry
- https://vuldb.com/?submit.743873third-party-advisory, vdb-entry
- https://github.com/happyfish100/libfastcommon/issues/55issue-tracking, exploit, vendor-advisory
- https://github.com/happyfish100/libfastcommon/issues/55#issuecomment-3776757848issue-tracking, exploit, vendor-advisory
- https://github.com/happyfish100/libfastcommon/issues/55#issue-3836362577exploit, issue-tracking, vendor-advisory
- https://github.com/happyfish100/libfastcommon/commit/82f66af3e252e3e137dba0c3891570f085e79adfpatch
- https://github.com/happyfish100/libfastcommon/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.