CVE-2026-51031Public exploitNetwork attack vector

Unauthenticated information disclosure via unchecked browser navigation

Published Jul 20, 2026 · Updated Jul 20, 2026

SSRF in FlareSolverr before 3.4.7 allows remote attackers to read sensitive resources through crafted /v1 API URL parameters. The request.get and request.post handlers pass the supplied URL directly to driver.get() without validating its protocol, host, or resolved IP address. Unauthenticated network access to /v1 is sufficient to make the FlareSolverr host navigate to attacker-selected internal or otherwise restricted destinations and return their content.

CVSS severity7.5
High
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

SSRF in FlareSolverr before 3.4.7 allows remote attackers to read sensitive resources through crafted /v1 API URL parameters. The request.get and request.post handlers pass the supplied URL directly to driver.get() without validating its protocol, host, or resolved IP address. Unauthenticated network access to /v1 is sufficient to make the FlareSolverr host navigate to attacker-selected internal or otherwise restricted destinations and return their content.

The record

CVE
CVE-2026-51031
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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