Vulnerability-Lookup

FKIE_CVE-2026-77157

Vulnerability from fkie_nvd - Published: 2026-10-22 18:17 - Updated: 2026-10-22 18:17

Severity

6.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

Summary

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.

References

	URL	Tags
	596c5446-0ce5-4ba2-aa66-48b3b757a647	https://github.com/Checkmarx/ast-cli
	596c5446-0ce5-4ba2-aa66-48b3b757a647	https://github.com/Checkmarx/ast-cli/security/advisories/GHSA-vf6p-x2fw-5hcg

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://golang.org/pkg",
          "defaultStatus": "unaffected",
          "packageName": "github.com/checkmarx/ast-cli",
          "product": "github.com/checkmarx/ast-cli",
          "repo": "https://github.com/checkmarx/ast-cli",
          "vendor": "Checkmarx",
          "versions": [
            {
              "lessThanOrEqual": "2.3.59",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "2.3.60",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "596c5446-0ce5-4ba2-aa66-48b3b757a647"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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\u2019s \"VSCode/JetBrains\" extensions and by cx scan \"sca-realtime\".\n\n\n\nPrior 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\u00a0and execute the contents of the archive, since no integrity check was performed on\u00a0the download.\n\n\n\nSuccessful 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\u0027s 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.\n\n\n\nThe download is now verified against a published SHA-256 checksum before extraction."
    }
  ],
  "id": "CVE-2026-77157",
  "lastModified": "2026-10-22T18:17:29.630",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 0.5,
        "impactScore": 5.9,
        "source": "596c5446-0ce5-4ba2-aa66-48b3b757a647",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "HIGH",
          "subIntegrityImpact": "HIGH",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "596c5446-0ce5-4ba2-aa66-48b3b757a647",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-10-22T18:17:29.630",
  "references": [
    {
      "source": "596c5446-0ce5-4ba2-aa66-48b3b757a647",
      "url": "https://github.com/Checkmarx/ast-cli"
    },
    {
      "source": "596c5446-0ce5-4ba2-aa66-48b3b757a647",
      "url": "https://github.com/Checkmarx/ast-cli/security/advisories/GHSA-vf6p-x2fw-5hcg"
    }
  ],
  "sourceIdentifier": "596c5446-0ce5-4ba2-aa66-48b3b757a647",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-353"
        }
      ],
      "source": "596c5446-0ce5-4ba2-aa66-48b3b757a647",
      "type": "Secondary"
    }
  ]
}

CVE-2026-77157 (GCVE-0-2026-77157)

Vulnerability from cvelistv5 – Published: 2026-10-22 17:50 – Updated: 2026-10-22 17:50

Title

ast-cli: Auto-update downloads are not verified against a checksum before execution

Summary

Severity

6.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

6.3 (Medium)


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

CWE

CWE-353 - Missing support for integrity check

Assigner

Checkmarx CNA under the mitre root

CNA scorecard – unranked: 7 records in the last 180 days, 10 needed details

References

2 references

URL	Tags
https://github.com/Checkmarx/ast-cli	product
https://github.com/Checkmarx/ast-cli/security/adv…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Checkmarx	github.com/checkmarx/ast-cli	Affected: 0 , ≤ 2.3.59 (semver) Unaffected: 2.3.60 (semver)

Date Public

2026-10-19 23:00

Credits

Sebástian Alba | @Sebasteuo

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://golang.org/pkg",
          "defaultStatus": "unaffected",
          "packageName": "github.com/checkmarx/ast-cli",
          "product": "github.com/checkmarx/ast-cli",
          "repo": "https://github.com/checkmarx/ast-cli",
          "vendor": "Checkmarx",
          "versions": [
            {
              "lessThanOrEqual": "2.3.59",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "2.3.60",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Seb\u00e1stian Alba | @Sebasteuo"
        }
      ],
      "datePublic": "2026-10-19T23:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003east-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\u2019s \"VSCode/JetBrains\" extensions and by cx scan \"sca-realtime\".\u003c/p\u003e\u003cp\u003ePrior 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\u0026nbsp;\u003cspan\u003eand execute the contents of the archive, since no integrity check was performed on\u0026nbsp;\u003c/span\u003e\u003cspan\u003ethe download.\u003c/span\u003e\u003c/p\u003e\u003cp\u003eSuccessful 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\u0027s 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.\u003cspan\u003e\u003c/span\u003e\u003c/p\u003e\u003cp\u003eThe download is now verified against a published SHA-256 checksum before extraction.\u003c/p\u003e"
            }
          ],
          "value": "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\u2019s \"VSCode/JetBrains\" extensions and by cx scan \"sca-realtime\".\n\n\n\nPrior 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\u00a0and execute the contents of the archive, since no integrity check was performed on\u00a0the download.\n\n\n\nSuccessful 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\u0027s 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.\n\n\n\nThe download is now verified against a published SHA-256 checksum before extraction."
        }
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      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
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          "scenarios": [
            {
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              "value": "GENERAL"
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        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "HIGH",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "scenarios": [
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        "orgId": "596c5446-0ce5-4ba2-aa66-48b3b757a647",
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      "references": [
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      "source": {
        "advisory": "GHSA-vf6p-x2fw-5hcg",
        "discovery": "EXTERNAL"
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  "cveMetadata": {
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    "datePublished": "2026-10-22T17:50:51.933Z",
    "dateReserved": "2026-08-20T14:34:06.113Z",
    "dateUpdated": "2026-10-22T17:50:51.933Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.
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