CVE-2026-75628: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-v6g5-xxrx-m495
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CVSS 5.7
CWE-601
Published
Advisory Summary

CVE-2026-75628 is a MODERATE (CVSS 5.7) security vulnerability vulnerability (CWE-601: URL Redirection to Untrusted Site ('Open Redirect')) affecting Software libraries in the Maven ecosystem. The weakness occurs when the web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-75628 at a Glance

CVE Identifier CVE-2026-75628
GHSA Identifier GHSA-v6g5-xxrx-m495
Severity MODERATE
CVSS v3.1 Base Score 5.7
CWE Classification CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.7

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-75628

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-75628, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect'), where the web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Punk::OAuth2 versions before 0.03 for Perl allow an attacker-chosen off-site redirect after login because same_origin_path accepts a backslash or tab in the return parameter. oauth2_login reads the return parameter from the initiation request, runs same_origin_path over it, and stores the survivor in the session flow record as the post-login redirect target. That check rejects a value that does not begin with a slash, one with a slash as its second byte, and one containing CR or LF. A backslash and a tab pass. The URL Standard treats a backslash as equivalent to a slash for special schemes, so `/\evil.example` parses with the authority `evil.example`. It also strips ASCII tab before parsing, so a tab between two leading slashes leaves `//evil.example`. A crafted link to the application's own login route lands the victim on the attacker's site after a genuine authentication. The redirect carries no authorization code or access token.

References

NVD — CVE-2026-75628 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-75628
datatracker.ietf.org/doc/html/rfc9700 WEB
https://datatracker.ietf.org/doc/html/rfc9700#section-4.11.1
metacpan.org/release/lnation/pun... WEB
https://metacpan.org/release/LNATION/Punk-OAuth2-0.02/source/include/pox/pox_util.h#L94
metacpan.org/release/lnation/pun... WEB
https://metacpan.org/release/LNATION/Punk-OAuth2-0.03/changes
url.spec.whatwg.org/ WEB
https://url.spec.whatwg.org/#concept-basic-url-parser
url.spec.whatwg.org/ WEB
https://url.spec.whatwg.org/#relative-slash-state
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/08/20/1

Frequently Asked Questions

What is CVE-2026-75628?
CVE-2026-75628 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-601: URL Redirection to Untrusted Site ('Open Redirect').
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-75628?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-75628?
CVE-2026-75628 has a CVSS v3.1 base score of 5.7 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2026-75628?
CVE-2026-75628 is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect') (The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.).
How can I check Maven dependencies for CVE-2026-75628?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
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  "schema_version" : "1.4.0",
  "id" : "GHSA-v6g5-xxrx-m495",
  "modified" : "2026-08-28T18:31:22Z",
  "published" : "2026-08-20T03:32:54Z",
  "aliases" : [ "CVE-2026-75628" ],
  "details" : "Punk::OAuth2 versions before 0.03 for Perl allow an attacker-chosen off-site redirect after login because same_origin_path accepts a backslash or tab in the return parameter.\n\noauth2_login reads the return parameter from the initiation request, runs same_origin_path over it, and stores the survivor in the session flow record as the post-login redirect target. That check rejects a value that does not begin with a slash, one with a slash as its second byte, and one containing CR or LF. A backslash and a tab pass. The URL Standard treats a backslash as equivalent to a slash for special schemes, so `/\\evil.example` parses with the authority `evil.example`. It also strips ASCII tab before parsing, so a tab between two leading slashes leaves `//evil.example`.\n\nA crafted link to the application's own login route lands the victim on the attacker's site after a genuine authentication. The redirect carries no authorization code or access token.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-75628"
  }, {
    "type" : "WEB",
    "url" : "https://datatracker.ietf.org/doc/html/rfc9700#section-4.11.1"
  }, {
    "type" : "WEB",
    "url" : "https://metacpan.org/release/LNATION/Punk-OAuth2-0.02/source/include/pox/pox_util.h#L94"
  }, {
    "type" : "WEB",
    "url" : "https://metacpan.org/release/LNATION/Punk-OAuth2-0.03/changes"
  }, {
    "type" : "WEB",
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  }, {
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  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/08/20/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-601" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-20T01:16:53Z"
  }
}