9.1

CVE-2026-60007: eclipse foundation eclipse milo Observable Response Discrepancy

CVSS: 9.1v4.0CriticalAnalyzed
Published 04-08-2026Last modified 04-08-2026
Open JSON

Vulnerability summary

CVE-2026-60007 is a critical (CVSS 9.1) Observable Response Discrepancy vulnerability in eclipse foundation eclipse milo. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 45% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v4.0 (CVE.org)
EPSS score
0.55%
0%100%
Low · +0.17 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 04-08-2026
    PublishedVulnerability first disclosed.
  2. 04-08-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.55%

Chance of exploitation in the next 30 days

Percentile

45%

Versus all other CVEs

30-day change

+0.17 pp

From 0.38% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.55%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Eclipse1 product
  • milo≥ 0.6.0, < 1.1.5
Eclipse foundation1 product

2 vendors · 2 products

References

3 links