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VulnerabilityPublished Updated

CVE-2026-73210: Lookyloo PlaywrightCapture · Server-Side Request Forgery (SSRF)

Affects Lookyloo PlaywrightCaptureSource CVE Database V5

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Mentioned vulnerabilities

Not known to be exploited · CVSS 5.1 Medium : upgrade to 1.40.6 when convenient.

Data as of 8 Nov 2026, 23:24 UTC

CVSS 4.0 base score
5.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.40.6
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.

What to do

Upgrade Lookyloo PlaywrightCapture to 1.40.6.

Affected software

ProductAffectedFixed in
LookylooPlaywrightCaptureAffected
  • <1.40.6
Fixed in
  • 1.40.6
GitHubPlaywrightCapturepkg:github/PlaywrightCaptureOther threatsAffected
  • <1.40.6
Fixed in
  • 1.40.6

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch has been released that introduces URL validation for favicon retrieval, rejecting requests to non-global IP addresses, localhost, .local domains, malformed URLs, and other non-public destinations. Users should upgrade PlaywrightCapture to version 1.40.6 or later to apply this fix. Since this is not a cloud service, remediation requires updating the affected software. There is no indication that the vulnerability is already mitigated or that no action is required.

Description

A Server-Side Request Forgery (SSRF) vulnerability existed in Lookyloo's PlaywrightCapture when the only_global_lookup option was enabled. PlaywrightCapture implements this option to prevent captures from accessing local, loopback, or otherwise non-public network resources. However, favicon retrieval was performed separately from the browser request-routing protections. Favicon URLs extracted from rendered HTML were resolved and subsequently fetched directly using an aiohttp.ClientSession. An attacker able to supply or control a web page processed by PlaywrightCapture could include a crafted favicon reference, for example pointing to a loopback address, private IP address, or another resource reachable only from the PlaywrightCapture host. When the page was processed, the favicon retrieval routine could issue an HTTP request to this destination despite only_global_lookup being enabled. This bypass could therefore be used to make the PlaywrightCapture host interact with internal network services that should not be reachable through a capture. Depending on the targeted service and its response, this could enable internal service discovery, access to internal resources, or interaction with HTTP endpoints available only from the capture infrastructure. The patch introduces a common URL validation routine and applies it to favicon retrieval. Direct non-global IP addresses, localhost, .local domains, malformed URLs, and other explicitly non-public destinations are rejected before the favicon request is performed. This fix is a complementary fix to CVE-2026-44439 - GCVE-0-2026-44439 - GHSA-687H-XW6F-Q2QW

References

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