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CVE-2026-34460

NamelessMC is website software for Minecraft servers. In versions 2.2.4 and prior, the OAuth callback handling does not validate the state parameter server-side before exchanging the authorization code. This allows an attacker to capture a valid OAuth callback URL for their own account and cause a victim's browser to navigate to it, resulting in the victim's session being authenticated as the attacker-linked account (OAuth login CSRF / session swapping). This is patched in version 2.2.5.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6be6873f368c2f0ccbee75a6539973ad7f12cfed6af5f08f60563ec2ae2f26bd
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-302","description":"CWE-302: Authentication Bypass by Assumed-Immutable Data","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:23e4102cc87c858f70d42fd42799feb712960d36d53294f9ec3302b8adf826de · sha256:9083e10f7c196275… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-352","description":"CWE-352: Cross-Site Request Forgery (CSRF)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:23e4102cc87c858f70d42fd42799feb712960d36d53294f9ec3302b8adf826de · sha256:9083e10f7c196275… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-346","description":"CWE-346: Origin Validation Error","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:23e4102cc87c858f70d42fd42799feb712960d36d53294f9ec3302b8adf826de · sha256:9083e10f7c196275… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"Nameless","vendor":"NamelessMC","versions":[{"status":"affected","version":"< 2.2.5"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:23e4102cc87c858f70d42fd42799feb712960d36d53294f9ec3302b8adf826de · sha256:9083e10f7c196275… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:23e4102cc87c858f70d42fd42799feb712960d36d53294f9ec3302b8adf826de · sha256:9083e10f7c196275… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-302","description":"CWE-302: Authentication Bypass by Assumed-Immutable Data","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:23e4102cc87c858f70d42fd42799feb712960d36d53294f9ec3302b8adf826de · sha256:9083e10f7c196275… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-352","description":"CWE-352: Cross-Site Request Forgery (CSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:23e4102cc87c858f70d42fd42799feb712960d36d53294f9ec3302b8adf826de · sha256:9083e10f7c196275… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-346","description":"CWE-346: Origin Validation Error","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:23e4102cc87c858f70d42fd42799feb712960d36d53294f9ec3302b8adf826de · sha256:9083e10f7c196275… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/NamelessMC/Nameless/security/advisories/GHSA-pmpw-2xvh-5xj6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:23e4102cc87c858f70d42fd42799feb712960d36d53294f9ec3302b8adf826de · sha256:9083e10f7c196275… · /containers/adp/0/references/0
{"name":"https://github.com/NamelessMC/Nameless/security/advisories/GHSA-pmpw-2xvh-5xj6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/NamelessMC/Nameless/security/advisories/GHSA-pmpw-2xvh-5xj6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:23e4102cc87c858f70d42fd42799feb712960d36d53294f9ec3302b8adf826de · sha256:9083e10f7c196275… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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