Category

Ssrf

Security vulnerabilities and automated fixes for ssrf issues

20 posts found

high6 min

How Octal IP Address Parsing Inconsistency Enables SSRF in Node.js and How to Fix It

A critical parsing inconsistency in the `ip-address` npm package (version 10.2.0) allowed attackers to bypass SSRF protections by exploiting how leading-zero octets are interpreted differently—decimal by the library versus octal by system resolvers. This vulnerability (CVE-2026-69192) was fixed by upgrading to version 10.3.1 using an npm override, ensuring consistent IP address validation across the application.

#ssrf#nodejs#npm+4 more
A
anupamme
Aug 11, 2026
high6 min

How NO_PROXY bypass via crafted URL happens in Node.js axios and how to fix it

A high-severity vulnerability (CVE-2026-42043) in the axios HTTP client library allowed attackers to bypass NO_PROXY environment variable restrictions using specially crafted URLs. This could route sensitive internal traffic through attacker-controlled proxy servers. The fix upgrades axios from 1.13.6 to 1.18.0, which includes a rewritten proxy resolution mechanism using `proxy-from-env` v2.1.0 and the `https-proxy-agent` package.

#security#axios#nodejs+4 more
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anupamme
Aug 10, 2026
high8 min

How Server-Side Request Forgery (SSRF) happens in Node.js through inconsistent IP address parsing and how to fix it

A high-severity Server-Side Request Forgery (SSRF) vulnerability (CVE-2026-69192) was discovered in the ip-address package version 10.2.0, where inconsistent IP address parsing allowed attackers to bypass trust boundaries and access internal resources. The fix upgrades ip-address from 10.2.0 to 10.3.1 across the dependency tree, with explicit pinning in package.json and strategic version management in bun.lock to prevent both direct and transitive exploitation paths.

#ssrf#ip-address#nodejs+4 more
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anupamme
Aug 10, 2026
critical8 min

How Server-Side Request Forgery (SSRF) happens in JavaScript and how to fix it

A critical Server-Side Request Forgery (SSRF) vulnerability was discovered in `libraries/microworlds/video.js` where the `VideoCanvasWrapper.loadVideo()` function passed user-controlled URLs directly to `fetch()` without any validation. An attacker could exploit this by supplying URLs pointing to internal services, localhost endpoints, or malicious external servers. The fix introduces strict URL parsing and protocol validation before any network request is made.

#ssrf#javascript#fetch+4 more
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anupamme
Aug 9, 2026
high7 min

How IP Address Parsing Inconsistency Happens in Node.js and How to Fix It

CVE-2026-69192 revealed a critical inconsistency in the `ip-address` npm package where the `Address4` class decoded leading-zero octets as decimal while standard DNS resolvers interpreted them as octal, creating a trust-boundary bypass and SSRF attack vector. The fix upgrades `ip-address` from version 10.2.0 to 10.3.1 in the CanvaLight plugin, correcting the parsing behavior to match resolver expectations.

#ssrf#ip-address#node.js+4 more
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anupamme
Aug 9, 2026
high8 min

How Message-Level Raw Option Bypass happens in Node.js Nodemailer and how to fix it

A high-severity vulnerability in Nodemailer (GHSA-p6gq-j5cr-w38f) allowed attackers to bypass the `disableFileAccess` and `disableUrlAccess` security controls by using the message-level `raw` option, enabling arbitrary file reads and full-response SSRF in delivered emails. The fix upgrades Nodemailer from version 6.10.1 to 9.0.1, closing this bypass at the library level. This is especially critical for applications that allow any user-influenced content to flow into email composition.

#nodemailer#ssrf#security-bypass+4 more
A
anupamme
Aug 8, 2026
critical5 min

How Server-Side Request Forgery (SSRF) happens in Node.js IP address parsing and how to fix it

A critical SSRF vulnerability (CVE-2026-69192) was discovered in the ip-address npm package version 10.2.0, which could allow attackers to bypass IP address validation and access internal services. The fix upgrades the dependency to version 10.3.1, which properly handles edge cases in IP address parsing that previously allowed trust-boundary bypasses.

#security#ssrf#nodejs+4 more
A
anupamme
Aug 7, 2026
critical6 min

How Server-Side Request Forgery happens in Node.js CLI tools and how to fix it

A critical Server-Side Request Forgery (SSRF) vulnerability in the compass-guarded-transfer CLI tool allowed attackers to make HTTP requests to internal services and cloud metadata endpoints. The `normalizeInput` function in `run-transfer.mjs` validated that URLs started with "https://" but failed to prevent requests to private IP ranges like AWS metadata (169.254.169.254) or localhost, enabling potential credential theft and internal network reconnaissance.

#ssrf#nodejs#security+4 more
A
anupamme
Aug 6, 2026
high8 min

How Message-Level Raw Option Bypass happens in Node.js Nodemailer and how to fix it

A high-severity vulnerability in Nodemailer (versions before 9.0.0) allowed the `raw` message option to completely bypass `disableFileAccess` and `disableUrlAccess` security controls, enabling attackers to read arbitrary files from the server filesystem and perform full-response Server-Side Request Forgery (SSRF) in delivered email messages. Upgrading from `^8.0.10` to `^9.0.4` in `backend/package-lock.json` closes this exploit primitive by enforcing access restrictions consistently across all m

#nodejs#nodemailer#ssrf+4 more
A
anupamme
Aug 6, 2026
high7 min

How Octal/Decimal IP Parsing Ambiguity happens in JavaScript and how to fix it

CVE-2026-69192 is a high-severity vulnerability in the `ip-address` npm package (versions before 10.3.1) where IPv4 addresses with leading-zero octets — like `010.0.0.1` — are parsed as decimal by the library but interpreted as octal by OS-level resolvers, creating a dangerous mismatch. This discrepancy can allow attackers to bypass IP-based access controls and trust boundaries, potentially enabling Server-Side Request Forgery (SSRF) attacks. Upgrading to `ip-address@10.3.1` in the SAP BW Query

#ssrf#cve-2026-69192#ip-address+4 more
A
anupamme
Aug 5, 2026
critical6 min

How unvalidated URL input handling happens in SvelteKit with Tauri and how to fix it

A critical vulnerability in `src/routes/+page.svelte` allowed attackers to supply arbitrary URLs—including `http://` and local file paths—through query parameters and drag-drop events, which were then fetched without validation. The fix restricts input to HTTPS-only URLs and removes the dangerous local file fetch path entirely, eliminating both SSRF and local file disclosure attack vectors.

#ssrf#svelte#tauri+4 more
A
anupamme
Aug 4, 2026
critical7 min

How Server-Side Request Forgery happens in Node.js server.js and how to fix it

A Server-Side Request Forgery (SSRF) vulnerability was discovered in `server.js` and `worker.js`, where user-supplied `config` URL parameters were passed directly to `fetchWithAuth()` without any validation. This allowed attackers to force the application to make requests to internal network addresses, cloud metadata endpoints like `169.254.169.254`, or `file://` URIs. The fix introduces an `isAllowedUrl()` allowlist function that rejects private IP ranges, loopback addresses, and non-HTTP(S) pr

#ssrf#nodejs#javascript+4 more
A
anupamme
Jul 27, 2026