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Response snapshot Oct 28, 2026, 17:11 UTC

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VulnerabilityCVE-2026-45794

OpenAM has Unsafe Java Deserialization via SNS

Description A Deserialization of Untrusted Data (CWE-502) issue exists in OpenAM's Push Notification SNS callback resource.

At a glance

Exploited
Not known
Severity
7.7 High (CVSS 4.0)
Chance of exploitation
Not estimated
Sources
1 source

What to do

GitHub lists first patched versions: org.openidentityplatform.openam:openam-push-notification: 16.1.1. Confirm the affected range and upgrade guidance in the exact advisory.

Read GitHub-reviewed advisory GHSA-pp89-732f-3g8q (opens a new tab)

What happened

Summary

Description

A Deserialization of Untrusted Data (CWE-502) issue exists in OpenAM's Push Notification SNS callback resource. The REST route that handles SNS push messages is mounted with anonymous access and, when a supplied message identifier has expired from the in-memory dispatcher, falls back to a CTS-stored predicate blob whose top-level keys are treated as Java class names and passed to Class.forName(...)

before attacker-controlled JSON is deserialized via Jackson. This impacts OpenAM Community Edition through version 16.0.6. This issue was patched in version 16.1.1.

Continue reading

Arbitrary attacker-controlled code execution was not confirmed on tested stock classpaths for the latest release, but the flaw yields a reliable class-loading and Jackson-construction primitive whose impacts include remotely triggerable process execution, file writes, and DoS, depending on the deployment's classpath and environment.

Impact

OpenAM Community Edition deployments through version 16.0.6 that enable the Push Notification Service with SNS callbacks are potentially affected. While the callback route itself is anonymous, the planting step requires a low-privileged user who can start Push Registration and read their own QR-code payload.

After that user obtains the server-issued messageId, shared secret, and challenge, they can wait for the in-memory dispatcher entry to expire and then send anonymous SNS callbacks that overwrite the persistent CTS blob with attacker-controlled JSON. A later anonymous callback for the same messageId causes OpenAM to load an attacker-named class and construct it with attacker-controlled values.

The planted blob is processed server-side with internal CTS privileges, giving a reliable class-loading and Jackson-construction primitive that can corrupt the push-token record and trigger classpath-dependent side effects in the OpenAM JVM.

Arbitrary attacker-controlled command execution was not confirmed on the tested stock classpaths; practical severity depends on enabled Push Registration flows, JDK version, bundled or co-deployed classes, and whether any reachable class-loading or construction side effects are security-relevant in the deployment.

Patch

This has been patched in OpenAM Community Edition version 16.1.1. Users are encouraged to update to the latest release.

Affected package ranges reported by GitHub: org.openidentityplatform.openam:openam-push-notification: < 16.1.1

Scores and how they were measured

CVSS base severity

7.7

Version 4.0As of

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

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

Not available

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Related technology

Sources

  1. Primary source

    GitHub-reviewed advisory GHSA-pp89-732f-3g8q (opens a new tab)

    The public advisory supplies the description, affected package/version ranges, and any listed CVSS metric. GitHub review is not local review.

    Published Checked

  2. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-pp89-732f-3g8q, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, October 28). OpenAM has Unsafe Java Deserialization via SNS (CVE-2026-45794). https://kevwire.com/record/CVE-2026-45794

MLA

"OpenAM has Unsafe Java Deserialization via SNS (CVE-2026-45794)." KEVWire, 28 Oct. 2026, kevwire.com/record/CVE-2026-45794.

Chicago

KEVWire. "OpenAM has Unsafe Java Deserialization via SNS (CVE-2026-45794)." Last modified October 28, 2026. https://kevwire.com/record/CVE-2026-45794.

Evidence summary (plain text)

OpenAM has Unsafe Java Deserialization via SNS (Jun 25, 2026).
Description

A Deserialization of Untrusted Data (CWE-502) issue exists in OpenAM's Push Notification SNS callback resource. The REST route that handles SNS push messages is mounted with anonymous access and, when a supplied message identifier has expired from the in-memory dispatcher, falls back to a CTS-stored predicate blob whose top-level keys are treated as Java class names and passed to Class.forName(...) before attacker-controlled JSON is deserialized via Jackson. This impacts OpenAM Community Edition through version 16.0.6. This issue was patched in version 16.1.1.
CVSS 7.7 (version 4.0; evidence as of Oct 28, 2026; https://github.com/advisories/GHSA-pp89-732f-3g8q).
Sources:
GitHub-reviewed advisory GHSA-pp89-732f-3g8q: https://github.com/advisories/GHSA-pp89-732f-3g8q
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc
Record ID: CVE-2026-45794.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Oct 28, 2026, 16:55 UTC. Ingestion is not an independent editorial investigation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

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Record details

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