What’s Vulnerable › Vulnerabilities

CVE-2021-46700

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-02-19 · updated 2026-06-17
• Weakness: CWE-415

Description

In libsixel 1.8.6, sixel_encoder_output_without_macro (called from sixel_encoder_encode_frame in encoder.c) has a double free.

Affected products

• saitoha libsixel: 1.8.6

References

• https://github.com/saitoha/libsixel/issues/158
• https://github.com/saitoha/libsixel/issues/158

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