More precisely, an attacker able to influence serialized data sent to
SimpleSocketServer or SimpleSSLSocketServer can instantiate Proxy objects.
Although deserialization is heavily restricted by HardenedObjectInputStream and no
practical way to achieve remote code execution or significant privilege
escalation has been identified, this issue constitutes a bypass of the
intended security restrictions.
This issue affects logback: through 1.5.33 inclusive.
Project Subscriptions
No data.
No advisories yet.
Solution
Upgrade to logback version 1.5.34.
Workaround
No workaround given by the vendor.
| Link | Providers |
|---|---|
| https://logback.qos.ch/news.html#1.5.34 |
|
Mon, 01 Jun 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 01 Jun 2026 13:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Deserialization of untrusted data vulnerability in QOS.CH Sarl logback logback-core (HardenedObjectInputStream (logback-core) modules) allows Object Injection, albeit heavily restricted. More precisely, an attacker able to influence serialized data sent to SimpleSocketServer or SimpleSSLSocketServer can instantiate Proxy objects. Although deserialization is heavily restricted by HardenedObjectInputStream and no practical way to achieve remote code execution or significant privilege escalation has been identified, this issue constitutes a bypass of the intended security restrictions. This issue affects logback: through 1.5.33 inclusive. | |
| Title | Logback deserialization whitelist bypass for Proxy objects | |
| Weaknesses | CWE-502 | |
| References |
| |
| Metrics |
cvssV4_0
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: NCSC.ch
Published:
Updated: 2026-06-01T13:56:21.654Z
Reserved: 2026-06-01T11:26:04.379Z
Link: CVE-2026-10532
Updated: 2026-06-01T13:56:18.213Z
Status : Deferred
Published: 2026-06-01T13:16:30.340
Modified: 2026-06-01T18:16:02.273
Link: CVE-2026-10532
No data.
OpenCVE Enrichment
Updated: 2026-06-01T14:45:26Z