CVE-2026-2016 (GCVE-0-2026-2016)
Vulnerability from cvelistv5 – Published: 2026-02-06 11:02 – Updated: 2026-02-23 09:24 X_Open Source
VLAI
EPSS
VEX
Title
happyfish100 libfastcommon base64.c base64_decode stack-based overflow
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-06 13:08 UTC
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.344598 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.344598 | signaturepermissions-required |
| https://vuldb.com/?submit.743873 | third-party-advisory |
| https://github.com/happyfish100/libfastcommon/issues/55 | issue-tracking |
| https://github.com/happyfish100/libfastcommon/iss… | issue-tracking |
| https://github.com/happyfish100/libfastcommon/iss… | exploitissue-tracking |
| https://github.com/happyfish100/libfastcommon/com… | patch |
| https://github.com/happyfish100/libfastcommon/ | product |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| happyfish100 | libfastcommon |
Affected:
1.0.0
Affected: 1.0.1 Affected: 1.0.2 Affected: 1.0.3 Affected: 1.0.4 Affected: 1.0.5 Affected: 1.0.6 Affected: 1.0.7 Affected: 1.0.8 Affected: 1.0.9 Affected: 1.0.10 Affected: 1.0.11 Affected: 1.0.12 Affected: 1.0.13 Affected: 1.0.14 Affected: 1.0.15 Affected: 1.0.16 Affected: 1.0.17 Affected: 1.0.18 Affected: 1.0.19 Affected: 1.0.20 Affected: 1.0.21 Affected: 1.0.22 Affected: 1.0.23 Affected: 1.0.24 Affected: 1.0.25 Affected: 1.0.26 Affected: 1.0.27 Affected: 1.0.28 Affected: 1.0.29 Affected: 1.0.30 Affected: 1.0.31 Affected: 1.0.32 Affected: 1.0.33 Affected: 1.0.34 Affected: 1.0.35 Affected: 1.0.36 Affected: 1.0.37 Affected: 1.0.38 Affected: 1.0.39 Affected: 1.0.40 Affected: 1.0.41 Affected: 1.0.42 Affected: 1.0.43 Affected: 1.0.44 Affected: 1.0.45 Affected: 1.0.46 Affected: 1.0.47 Affected: 1.0.48 Affected: 1.0.49 Affected: 1.0.50 Affected: 1.0.51 Affected: 1.0.52 Affected: 1.0.53 Affected: 1.0.54 Affected: 1.0.55 Affected: 1.0.56 Affected: 1.0.57 Affected: 1.0.58 Affected: 1.0.59 Affected: 1.0.60 Affected: 1.0.61 Affected: 1.0.62 Affected: 1.0.63 Affected: 1.0.64 Affected: 1.0.65 Affected: 1.0.66 Affected: 1.0.67 Affected: 1.0.68 Affected: 1.0.69 Affected: 1.0.70 Affected: 1.0.71 Affected: 1.0.72 Affected: 1.0.73 Affected: 1.0.74 Affected: 1.0.75 Affected: 1.0.76 Affected: 1.0.77 Affected: 1.0.78 Affected: 1.0.79 Affected: 1.0.80 Affected: 1.0.81 Affected: 1.0.82 Affected: 1.0.83 Affected: 1.0.84 |
guessed |
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"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."
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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