CVE-2026-123653 (CVSS 6.3)

Description

A security vulnerability has been detected in esengine DeepSeek-Reasonix up to 2.52.0. Affected is the function discoverDocs of the file internal/memory/doc.go. The manipulation leads to improper neutralization of input used for llm prompting. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 2.53.0 is able to address this issue. The identifier of the patch is 4ca33493a673c2788aa8598fbca2b2f47a69e1b8. It is suggested to upgrade the affected component.

Is your site exposed to CVE-2026-123653?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

6.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.12%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-349 CWE-349

References

Other References

https://github.com/esengine/DeepSeek-Reasonix/ https://github.com/esengine/DeepSeek-Reasonix/commit/4ca33493a673c2788aa8598fbca2b2f47a69e1b8 https://github.com/esengine/DeepSeek-Reasonix/issues/13061 https://github.com/esengine/DeepSeek-Reasonix/releases/tag/v2.53.0 https://github.com/esengine/DeepSeek-Reasonix/security/advisories/GHSA-7v48-x992-r5w7 https://github.com/ybyu-ieu/agent-security-advisories/blob/main/deepseek-reasonix/deepseek-reasonix-agents-md-prompt-injection-command-execution.md https://vuldb.com/cve/CVE-2026-123653 https://vuldb.com/submit/1033134 https://vuldb.com/vuln/431772 https://vuldb.com/vuln/431772/cti

Frequently Asked Questions

What is CVE-2026-123653? +

A security vulnerability has been detected in esengine DeepSeek-Reasonix up to 2.52.0. Affected is the function discoverDocs of the file internal/memory/doc.go. The manipulation leads to improper neutralization of input used for llm prompting. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 2.53.0 is able to address this issue. The identifier of the patch is 4ca33493a673c2788aa8598fbca2b2f47a69e1b8. It is suggested to upgrade the affected component. It has a CVSS v3.1 base score of 6.3 (MEDIUM).

How severe is CVE-2026-123653? +

CVE-2026-123653 has a CVSS v3.1 score of 6.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0022, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-123653? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-117656

Acceptance of Extraneous Untrusted Data With Trusted Data vulnerability in the Sign in with Apple strategy in pow-auth Assent allows …

CVE-2026-102527

Nuxt OG Image generates OG Images with Vue templates in Nuxt. From 6.2.5 until 6.7.0, the dynamic /_og/d/*.png route accepts …

CVE-2026-48100

Payy is an Ethereum L2 zk-rollup for privacy preserving and regulatory compliant transactions. Prior to version 1.3.0, agg_agg forwards the …

CVE-2025-5994

A multi-vendor cache poisoning vulnerability named 'Rebirthday Attack' has been discovered in caching resolvers that support EDNS Client Subnet (ECS). …

CVE-2026-112256

Acceptance of extraneous untrusted data with trusted data vulnerability in OpenText Advanced Authentication Server allows Accessing Functionality Not Properly Constrained …

CVE-2025-11411

NLnet Labs Unbound up to and including version 1.24.1 is vulnerable to possible domain hijack attacks. Promiscuous NS RRSets that …