CVE-2026-60007

CRITICAL 9.1 ALL-YEARS

Published 2026-08-04 · Last modified 2026-08-04 · eclipse · NVD: Analyzed

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.

ELEVATED IMPACT

Severe if exploited (CVSS 9.1), but no confirmed exploitation. Patch on a normal cadence.

Exploitation likelihood

0.6%chance of exploitation in 30 days · 46th percentile

○ In CISA KEV○ Catalogued PoC◆ SSVC: exploitation none, automatable no

Impact if exploited

9.1CVSS 4.0 · CRITICAL · CNA

ConfidentialityHigh
IntegrityHigh
AvailabilityNone

What an attacker needs

✓Access: Reachable over the network — no local access needed
✓Privileges: No account or privileges required
✓User interaction: No user interaction needed
✓Complexity: No special conditions — reliably repeatable
⚠Requirements: Specific conditions must be present

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

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Affected

Vendors Eclipse Foundation Eclipse

Products Eclipse Milo Milo

Weakness (CWE)

CWE-204: Observable Response Discrepancy

CVSS vector

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

References and research data (JSON)

Known Affected Software Configurations

Vendor	Product	Version range
Eclipse	Milo	≥ 0.6.0 and < 1.1.5

All CVSS metrics

CRITICAL 9.1 v4.0 · CNA Primary
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CRITICAL 9.1 v4.0 · NVD Secondary
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
HIGH 7.4 v3.1 · NVD Primary
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

Patches & mitigations

https://github.com/eclipse-milo/milo/commit/db59fae993a3a1bc66fffc8a2796d444b40285fb PatchCVE record · eclipse · Updated 2026-08-04T11:59:59.234Z
NVD · CVE-2026-60007 · Updated 2026-10-23T23:10:00.157
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/183 Issue TrackingPatchVendor AdvisoryCVE record · eclipse · Updated 2026-08-04T11:59:59.234Z
NVD · CVE-2026-60007 · Updated 2026-10-23T23:10:00.157

Advisories

https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/598 Issue TrackingVendor AdvisoryCVE record · eclipse · Updated 2026-08-04T11:59:59.234Z
NVD · CVE-2026-60007 · Updated 2026-10-23T23:10:00.157
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-52660 ADVISORYEUVD · EUVD-2026-52660

Sources: NVD · CVE.org · All sources and attribution · EPSS