Is there a public exploit for CVE-2026-77157?

No public exploit for CVE-2026-77157 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-77157?

CVE-2026-77157 scores CVSS 6.3 (v4.0), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.14%.

What does CVE-2026-77157 affect?

CVE-2026-77157 affects Checkmarx github.com/checkmarx/ast-cli.

6.3 Medium

ast-cli downloads two helper binaries, the Vorpal ASCA real-time engine and the SCA Resolver, from "download.checkmarx.com" as part of its…

CVE-2026-77157

ast-cli downloads two helper binaries, the Vorpal ASCA real-time engine and the SCA Resolver, from "download.checkmarx.com" as part of its auto-update flow, triggered by the Checkmarx’s "VSCode/JetBrains" extensions and by cx scan "sca-realtime". Prior to the fix, the downloaded archive was not verified against a checksum before extraction and execution. An attacker able to substitute the served archive could deliver an arbitrary binary that ast-cli would extract and execute the contents of the archive, since no integrity check was performed on the download. Successful exploitation requires compromising "download.checkmarx.com" and replacing the served archive with one containing an attacker-controlled binary. If the served archive had been replaced that way, any developer machine or CI pipeline invoking ASCA (via Checkmarx's VSCode/JetBrains extensions) or cx scan "sca-realtime" on an affected version would have extracted and executed that binary in place of the intended download. The download is now verified against a published SHA-256 checksum before extraction.

Assessment

CVSS: 6.3 (v4.0)
Severity: Medium
EPSS: 0.14% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 22 October 2026
Last updated: 2 November 2026
Affected: Checkmarx · github.com/checkmarx/ast-cli
Assigner: Checkmarx

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

At the source

EUVD (ENISA)

References

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