# CVE-2026-102083: Junos OS: SRX Series: With WebFiltering enabled prolonged HTTP session load can cause a crash

> An unauthenticated attacker can cause a Denial-of-Service on Juniper SRX devices by sending sustained HTTP traffic when WebFiltering is enabled and the cloud server is unreachable.

- **Severity:** High 8.2 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Oct 2026
- **Updated:** 14 Oct 2026
- **Also known as:** GHSA-f3xf-5j84-wp9m

## What is CVE-2026-102083?

CVE-2026-102083 is a high-severity denial of service vulnerability in Juniper Networks Junos OS, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An Improper Resource Locking vulnerability in the UTM processing of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).

When UTM WebFiltering is configured and the WebFiltering cloud server is unreachable, sustained HTTP traffic load may cause the UTM subsystem to crash and restart, which will lead to a complete service outage until the system has recovered.
When category lookup requests cannot be completed, they accumulate internally. Under high load and specific timing conditions, an invalid internal state can occur during cleanup of pending WebFiltering lookups, resulting in a crash of the UTM process.
This issue applies to both NextGeneration WebFiltering (NGWF) and Enhanced WebFiltering (EWF).

This issue affects Junos OS on SRX Series:

  *  23.2 versions from 23.2R2 before 23.2R2-S7.7;
  *  23.4 versions from 23.4R2 before 23.4R2-S8.13;
  *  24.2 versions before 24.2R2-S5.5;
  *  24.4 versions before 24.4R2-S4;
  *  25.2 versions before 25.2R2-S1;
  *  25.4 versions before 25.4R1-S3, 25.4R2.

Weakness: CWE-413 (Improper Resource Locking)

## Which versions are affected by CVE-2026-102083?


## How do I fix CVE-2026-102083?

No fix has been published for CVE-2026-102083 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-102083 being exploited?

There is no known exploitation of CVE-2026-102083 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-102083 and fix it if it is affected.

What it is: CVE-2026-102083 is a high-severity denial of service vulnerability in Juniper Networks Junos OS, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-102083 in the wild and no public exploit code.

Affected product: Juniper Networks Junos OS. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-102083/ (Markdown: https://insights.sbomify.com/CVE-2026-102083/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-102083
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-102083
- OSV: https://osv.dev/vulnerability/CVE-2026-102083

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-102083/
Summaries are generated and may contain mistakes; the official description above is the record.