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Findings

CVE-2026-61429

PraisonAI: Crawl4AI/Chromium backend is also affected by the SSRF validation bypass

Published Oct 7, 2026 · corrected/updated Oct 15, 2026 · evidence confidence high

## Summary The DNS-rebinding / redirect SSRF bypass in PRAI-05 is **not limited to the httpx/urllib backend**. When (headless Chromium via Playwright) is installed, auto-selects , and the headless browser re-resolves DNS and follows redirects on its own — with no per-connection SSRF guard. Runtime-confirmed read-back of the internal canary via both DNS rebinding and redirect ( ). Status: runtime-confirmed addendum to PRAI-05. ## Details ### Affected component - Package 4.6.63. Backend selected when +Playwright are installed. - Files: ( ) and (standalone crawl wrappers). ### Vulnerable code / root cause Path: Function: Snippet: Path: Function: / Snippet: Issue: the only SSRF check is the single pre-fetch on the initial URL string in (see PRAI-05). The headless browser then resolves and connects independently and follows redirects in-browser — no resolved-IP pinning, no per-hop/per-connect validation. Input ( ) is attacker/agent-controlled; the sink is ; the guard is bypassed by DNS rebinding (TOCTOU) and by redirects (followed in-browser). ### Attack flow / Why bypassed / Security boundary Identical to PRAI-05: TOCTOU between the guard's resolution and the browser's connection; redirects followed in-browser; internal response returned as crawl . See PRAI-05. ## Proof of Concept ### Environment + Playwright Chromium installed in a dedicated runtime container ( ), same controlled internal canary + rebinding DNS. Runnable assets: ( ). ### Steps to reproduce 1. → : 2. Redirect variant : . ### Expected result The crawl backend refuses internal destinations regardless of DNS timing/redirects. ### Actual result HTTP 200, , response contains + for both the DNS-rebinding and the redirect payload. ### Screenshots **Crawl4AI DNS rebinding read-back** The attacker-controlled URL is accepted by the Crawl4AI-backed endpoint. PraisonAI returns the internal canary response body containing . **Crawl4AI DNS rebinding runtime evidence** The runtime log shows the Crawl4AI/Chromium backe

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2026-61429 is a high public vulnerability record for this product. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether this product is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: praisonaiagents (0 → 1.6.78). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 8.5. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-200, CWE-367, CWE-918. Sources contributing to this record: cve_org, github, osv. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 7, 2026 · GitHub Advisory Database

    Detected

    ## Summary The DNS-rebinding / redirect SSRF bypass in PRAI-05 is **not limited to the httpx/urllib backend**. When (headless Chromium via Playwright) is installed, auto-selects , and the headless browser re-resolves DNS and follows redirects on its own — with no per-connection SSRF guard. Runtime-confirmed read-back of the internal canary via both DNS rebinding and redirect ( ). Status: runtime-c

  2. Oct 15, 2026 · GitHub Advisory Database

    Fix available

    praisonaiagents fixed in 1.6.78

  3. Oct 15, 2026 · GitHub Advisory Database

    Fix available

    praisonaiagents fixed in 1.6.78

  4. Oct 15, 2026 · GitHub Advisory Database

    Updated

    ## Summary The DNS-rebinding / redirect SSRF bypass in PRAI-05 is **not limited to the httpx/urllib backend**. When (headless Chromium via Playwright) is installed, auto-selects , and the headless browser re-resolves DNS and follows redirects on its own — with no per-connection SSRF guard. Runtime-confirmed read-back of the internal canary via both DNS rebinding and redirect ( ). Status: runtime-c

Affected

  • PyPI praisonaiagents0 → 1.6.78

Sources

References