CVE-2025-55750Network attack vector

Bitbucket token disclosure via fragment-preserving OAuth redirect

Published Aug 29, 2025 · Updated Aug 29, 2025

Sensitive information exposure in Gitpod Classic before main-gha.33628 allows remote attackers to obtain Bitbucket access tokens via crafted links. The OAuth completion flow used ordinary redirects that retained Bitbucket's access-token URL fragment while following an attacker-controlled return destination. A Gitpod-authenticated Bitbucket user must click the link; GitHub and GitLab integrations are unaffected, and the disclosed token permits Bitbucket access within its scopes.

CVSS severity6.5
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive information exposure in Gitpod Classic before main-gha.33628 allows remote attackers to obtain Bitbucket access tokens via crafted links. The OAuth completion flow used ordinary redirects that retained Bitbucket's access-token URL fragment while following an attacker-controlled return destination. A Gitpod-authenticated Bitbucket user must click the link; GitHub and GitLab integrations are unaffected, and the disclosed token permits Bitbucket access within its scopes.

The record

CVE
CVE-2025-55750
Published
Aug 29, 2025
Updated
Aug 29, 2025
Vendor
Gitpod
Product
Gitpod Classic
Classifications
CWE-201, T1528
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 29, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Gitpod Classic Enterprise < main-gha.33628
  2. Affected versionversion=Gitpod Classic < main-gha.33628

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Gitpod · Gitpod Classicversion=Gitpod Classic Enterprise < main-gha.33628; version=Gitpod Classic < main-gha.33628

Published CVSS scores

6.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-201Insertion of Sensitive Information Into Sent Data
T1528Steal Application Access Token

Public exploit references

No public exploit references are available in this record.

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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