# CVE-2026-41707 — Spring Security

> As of 2026-08-25, CVE-2026-41707 is a HIGH-severity vulnerability in Spring Security, CVSS v3.1 7.4. No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-41707 as of 2026-08-25; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-25

## What is CVE-2026-41707?

Authentication Bypass by Capture-replay vulnerability in Spring Spring Security allows Spring Security's DPoPProofJwtDecoderFactory contains a cache-based replay attack vulnerability. The internal cache storing JWT ID claims has a strict size limit, allowing attackers to evict legitimate entries by flooding the server with dummy requests, then replay intercepted valid DPoP proofs. This issue affects Spring Security: 7.1.0, from 7.0.0 through 7.0.6, and from 6.5.0 through 6.5.11.

The record classifies CVE-2026-41707 under weakness class [CWE-294](https://intel.threadlinqs.com/cwe/CWE-294). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 41 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.4 — HIGH (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-25

## Is CVE-2026-41707 being exploited?

It currently carries a trending score of 30 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **Spring**: Security

## How to fix CVE-2026-41707

No vendor patch reference has been recorded for CVE-2026-41707 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-41707

No threat campaign in the Threadlinqs corpus currently references CVE-2026-41707, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, GitHub Security Advisories. Last verified by Threadlinqs on 2026-08-26. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [spring.io](https://spring.io/security/cve-2026-41707)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-41707
Full detection coverage and IOCs for threats exploiting CVE-2026-41707 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp