CVE-2026-60007

In Eclipse Milo versions 0.6.0 through 1.1.4, username-token processing returns distinguishable errors for invalid RSA PKCS#1 v1.5 padding and other authentication failures, allowing an on-path attacker who captures a victim's `Basic128Rsa15`-encrypted username token to use repeated unauthenticated `ActivateSession` requests as a padding oracle, recover the victim's password, and authenticate with the recovered credentials.

CVSS 4.0

9.1CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS

0.6% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-25)

CWE

CWE-204

Published

2026-08-04

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

Affected

• eclipse:milo

References

• https://github.com/eclipse-milo/milo/commit/db59fae993a3a1bc66fffc8a2796d444b40285fb
• https://gitlab.eclipse.org/security/cve-assignment/-/work_items/183
• https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/598

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