CVE-2025-50709Public exploitNetwork attack vector

Chat history disclosure via exposed URL token

Published Sep 17, 2025 · Updated Sep 17, 2025

Information disclosure in Perplexity AI Web Application 2.51.0 allows remote attackers to read shared chat histories through a tokenized URL. The /search/ endpoint places the bearer token in the URL and returns the associated conversation without authentication or token expiration. Possession of a valid token obtained from browser history, referrer headers, logs, network records, or a shared link is sufficient to expose the full conversation.

CVSS severity4.3
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Perplexity AI Web Application 2.51.0 allows remote attackers to read shared chat histories through a tokenized URL. The /search/ endpoint places the bearer token in the URL and returns the associated conversation without authentication or token expiration. Possession of a valid token obtained from browser history, referrer headers, logs, network records, or a shared link is sufficient to expose the full conversation.

The record

CVE
CVE-2025-50709
Published
Sep 17, 2025
Updated
Sep 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-598
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2025Record 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

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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-598Use of GET Request Method With Sensitive Query Strings

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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