CVE-2026-77650: CWE-506 Embedded Malicious Code in droundy append-only-vec
The append-only-vec crate version 0.1.9 for Rust contains embedded malicious code due to a rogue dependency. This malicious code can execute arbitrary commands by communicating with a command-and-control server during the compilation of projects using this crate. The vulnerability is critical with a CVSS score of 9.8, indicating high impact on confidentiality, integrity, and availability.
AI Analysis
Technical Summary
CVE-2026-77650 affects the Rust crate append-only-vec version 0.1.9, which includes a rogue dependency that registers with a command-and-control server. This behavior enables arbitrary code execution during the compilation process of any project that uses this crate. The vulnerability is classified under CWE-506 (Embedded Malicious Code). No official patch or remediation has been documented yet.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary code on the system compiling the affected crate, potentially leading to full system compromise, data loss, or further malicious activity. The vulnerability impacts confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid using append-only-vec version 0.1.9 or audit dependencies carefully. Consider using alternative crates or verifying the integrity of dependencies before use.
CVE-2026-77650: CWE-506 Embedded Malicious Code in droundy append-only-vec
Description
The append-only-vec crate version 0.1.9 for Rust contains embedded malicious code due to a rogue dependency. This malicious code can execute arbitrary commands by communicating with a command-and-control server during the compilation of projects using this crate. The vulnerability is critical with a CVSS score of 9.8, indicating high impact on confidentiality, integrity, and availability.
CVSS v3.1
Score 9.8critical
Affected software
pkg:cargo/droundy/append-only-vecRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-77650 affects the Rust crate append-only-vec version 0.1.9, which includes a rogue dependency that registers with a command-and-control server. This behavior enables arbitrary code execution during the compilation process of any project that uses this crate. The vulnerability is classified under CWE-506 (Embedded Malicious Code). No official patch or remediation has been documented yet.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary code on the system compiling the affected crate, potentially leading to full system compromise, data loss, or further malicious activity. The vulnerability impacts confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid using append-only-vec version 0.1.9 or audit dependencies carefully. Consider using alternative crates or verifying the integrity of dependencies before use.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-08-21T00:40:26.113Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a87a15cacd9273b496328dc
Added to database: 08/21/2026, 00:52:44 UTC
Last enriched: 08/21/2026, 01:07:10 UTC
Last updated: 08/21/2026, 01:51:42 UTC
Views: 5
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