CVE-2026-56357 n8n - Webhook Forgery via Missing HMAC-SHA256 Signature Verification in GitHub Webhook Trigger

n8n before 1.123.15 and 2.5.0 contains a webhook forgery vulnerability in the GitHub Webhook Trigger node that fails to implement HMAC-SHA256 signature verification. Attackers who know the webhook URL can send unsigned POST requests to trigger workflows with arbitrary data, spoofing GitHub webhoo...

CVE-2026-56357 n8n - Webhook Forgery via Missing HMAC-SHA256 Signature Verification in GitHub Webhook Trigger

n8n before 1.123.15 and 2.5.0 contains a webhook forgery vulnerability in the GitHub Webhook Trigger node that fails to implement HMAC-SHA256 signature verification. Attackers who know the webhook URL can send unsigned POST requests to trigger workflows with arbitrary data, spoofing GitHub webhoo...

GHSA-49P4-PX3H-RQ49 Build breakout using malicious Containerfile and Git Smart HTTP server or GitHub release tar archive

Impact When processing a build contexts or add/copy instructions, a malicious server serving a Git repository or a tar archive file can cause files outside of the build context directory to be included in the build context or copied into the build. Patches Fixed in Buildah 1.44 and 1.43.2...

Malicious code in node-fetch-utils (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 78aef0d64a7d761d2987d27aea462083425e5692475cd81332b7a3152c754308 On Windows, scripts/postinstall.js XOR-decodes a hardcoded C2 host node22.lunes.host:3258, authenticates with a 5-minute rolling HMAC-SHA256 token,...

MAL-2026-6271 Malicious code in node-fetch-utils (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 78aef0d64a7d761d2987d27aea462083425e5692475cd81332b7a3152c754308 On Windows, scripts/postinstall.js XOR-decodes a hardcoded C2 host node22.lunes.host:3258, authenticates with a 5-minute rolling HMAC-SHA256 token,...

GO-2026-5060 Gotenberg: SSRF via LibreOffice document processing in github.com/gotenberg/gotenberg

Gotenberg: SSRF via LibreOffice document processing in github.com/gotenberg/gotenberg...

Scammers Use Fake GitHub Stars, VirusTotal Reviews to Spread Crypto Clipper

A multi-platform malware campaign abuses fake trust signals to infect Windows and Mac users with a crypto clipper packed with 15,500 attacker wallets...

Malicious code in respects-switch (npm)

respects-switch is a dependency confusion proof-of-concept package published to the public npm registry by the account r0binak and self-labeled "Security research PoC - Dependency Confusion Hunter". It was published at the artificially high version 999.0.0, the canonical floating-version bait use...

A week in security (June 15 – June 21)

Last week on Malwarebytes Labs: Nearly 15,000 infected websites cleaned in SocGholish crackdown Apple patches Beats Studio Buds flaw that could turn earbuds into a wiretap Microsoft working on a fix for RoguePlanet, a flaw that grants full PC control Retro gaming fans are the new target for fake...

GHSA-V3F4-W7R7-V3HM

creationtimestamp| type| source ---|---|--- 2026-06-22 05:11:16+00:00| seen| https://gist.github.com/alon710/c55617deed0f6aa3ac7d480b01fa4253...

GHSA-H3M5-97JQ-QJRF

creationtimestamp| type| source ---|---|--- 2026-06-22 03:42:22+00:00| seen| https://gist.github.com/alon710/2f8edd2e7aeda928380e8cf2e8c29eb1...

PT-2026-51297

Name of the Vulnerable Software and Affected Versions GitHub Copilot version 1.372.0 Description An issue exists where the software allows filesystem access outside of a workspace folder without user approval. This occurs via a file-handler URI parameter used in the fetch webpage function. This...

CVE-2025-66389

GitHub Copilot 1.372.0 allows filesystem access outside of a workspace folder without user approval via a file-handler URI parameter to fetchwebpage. Therefore, exfiltration could occur if there is indirect prompt injection...

CVE-2026-56357: Authentication Bypass by Spoofing

n8n before 1.123.15 and 2.5.0 contains a webhook forgery vulnerability in the GitHub Webhook Trigger node that fails to implement HMAC-SHA256 signature verification. Attackers who know the webhook URL can send unsigned POST requests to trigger workflows with arbitrary data, spoofing GitHub webhoo...

CVE-2025-66389

GitHub Copilot version 1.372.0 is vulnerable to unauthorized filesystem access outside of a workspace folder. The root cause is a file-handler URI parameter used in the fetch_webpage() function, which allows access without user approval. This flaw could lead to data exfiltration if an indirect pr...

CVE-2025-66389: Undefined Security Weakness

GitHub Copilot 1.372.0 allows filesystem access outside of a workspace folder without user approval via a file-handler URI parameter to fetchwebpage. Therefore, exfiltration could occur if there is indirect prompt injection...

EUVD-2025-210298

GitHub Copilot 1.372.0 allows filesystem access outside of a workspace folder without user approval via a file-handler URI parameter to fetchwebpage. Therefore, exfiltration could occur if there is indirect prompt injection...

CVE-2026-44179

creationtimestamp| type| source ---|---|--- 2026-06-21 19:03:12+00:00| published-proof-of-concept| https://github.com/xwikisas/xwiki-pro-macros/security/advisories/GHSA-w56x-9778-rppx...

Integer Overflow or Wraparound

Overview Affected versions of this package are vulnerable to Integer Overflow or Wraparound via the endDoctypeDecl process when handling NOTATION declarations. An attacker can cause memory corruption or potentially execute arbitrary code by providing specially crafted XML input. Remediation Upgra...

Malicious code in requests-enhancer (PyPI)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector a0f61f1a905e0ec1bb593f7b20d4f9a8a9e72deeb16440f72acbcaf00aeab1cd On import requestsenhancer, the package's init.py spawns a daemon thread that runs pip install...