VulnerabilityPublished 8 Aug 2026Updated 12 Aug 2026

CVE-2026-19266: Kirachon context-engine · Command Injection

Affects Kirachon context-engineSource CVE Database V5

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Not known to be exploited · CVSS 5.1 Medium · fixed in 1.9.1 : update Kirachon context-engine when convenient.

Data as of 5 Nov 2026, 00:01 UTC

CVSS 4.0 base score

5.1Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 3.9% chance of exploitation in 30 days – higher than 90% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 1.9.1

CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X

Attack Vector: Adjacent
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: Low
Vulnerable system availability: Low
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Adjacent: The vulnerable system is bound to a protocol stack, but the attack is limited at the protocol level to a logically adjacent topology. This can mean an attack must be launched from the same shared proximity (e.g., Bluetooth, NFC, or IEEE 802.11) or logical network (e.g., local IP subnet), or from within a secure or otherwise limited administrative domain (e.g., MPLS, secure VPN within an administrative network zone).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 8 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Kirachoncontext-engine	Affected 1.0 – 1.9.0 10 affected builds	Fixed in–
GitHubkirachon/context-engine`pkg:github/kirachon/context-engine`Other threats	Affected 1.0 – 1.9.0 10 affected builds	Fixed in–

CPE configurations (1)

cpe:2.3:a:kirachon:context-engine:*:*:*:*:*:*:*:*

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AI-suggested

Upgrade Kirachon context-engine to version 1.9.1 or later, which contains the patch e0729dcfd3a2b1682a7bff86e7174852c03419ba that fixes the command injection vulnerability. No other mitigation or temporary workaround is indicated.

Description

A vulnerability was determined in Kirachon context-engine up to 1.9.0. This affects the function execGitCommand of the file src/mcp/utils/gitUtils.ts of the component review-git-diff Endpoint. Executing a manipulation of the argument args can lead to command injection. Upgrading to version 1.9.1 mitigates this issue. This patch is called e0729dcfd3a2b1682a7bff86e7174852c03419ba. It is advisable to upgrade the affected component.

Impact

An attacker with local access and low privileges can manipulate the argument passed to execGitCommand, leading to command injection. This could allow execution of arbitrary commands with the privileges of the vulnerable process, potentially compromising system integrity or confidentiality. However, the attack requires local access and low privileges, limiting the scope of exploitation.

Summary

This vulnerability exists in the Kirachon context-engine component review-git-diff endpoint, specifically in the execGitCommand function of src/mcp/utils/gitUtils.ts. Improper handling of the 'args' parameter allows an attacker with local privileges to inject arbitrary commands. The issue is fixed in version 1.9.1 by patch e0729dcfd3a2b1682a7bff86e7174852c03419ba. The CVSS 4.0 base score is 5.1, indicating a medium severity vulnerability with local attack vector and low privileges required.

References

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