How severe is CVE-2026-6494?

CVE-2026-6494 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-6494 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-6494?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-6494 have an EU (EUVD) identifier?

Yes. CVE-2026-6494 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23400.

When was CVE-2026-6494 published?

CVE-2026-6494 was published on 2026-04-17 and last updated on 2026-06-17.

CVE-2026-6494

CVE-2026-6494 is a medium-severity vulnerability with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-117.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23400
Weakness: CWE-117
Published: 2026-04-17
Last modified: 2026-06-17

Description

A flaw was found in the AAP MCP server. An unauthenticated remote attacker can exploit a log injection vulnerability by sending specially crafted input to the `toolsetroute` parameter. This parameter is not properly sanitized before being written to logs, allowing the attacker to inject control characters such as newlines and ANSI escape sequences. This enables the attacker to obscure legitimate log entries and insert forged ones, which could facilitate social engineering attacks, potentially leading to an operator executing dangerous commands or visiting malicious URLs.

Frequently asked questions

What is CVE-2026-6494?: A flaw was found in the AAP MCP server. An unauthenticated remote attacker can exploit a log injection vulnerability by sending specially crafted input to the `toolsetroute` parameter. This parameter is not properly sanitized before being written to logs, allowing the attacker to inject control characters such as newlines and ANSI escape sequences. This enables the attacker to obscure legitimate log entries and insert forged ones, which could facilitate social engineering attacks, potentially leading to an operator executing dangerous commands or visiting malicious URLs.
How severe is CVE-2026-6494?: CVE-2026-6494 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-6494 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-6494?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-6494 have an EU (EUVD) identifier?: Yes. CVE-2026-6494 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23400.
When was CVE-2026-6494 published?: CVE-2026-6494 was published on 2026-04-17 and last updated on 2026-06-17.

References

Other CWE-117 (Improper Output Neutralization for Logs) vulnerabilities

CVE-2023-46322 — Critical (CVSS 9.8): iTermSessionLauncher.m in iTerm2 before 3.5.0beta12 does not sanitize ssh hostnames in URLs. The hostname's initial…
CVE-2023-46321 — Critical (CVSS 9.8): iTermSessionLauncher.m in iTerm2 before 3.5.0beta12 does not sanitize paths in x-man-page URLs. They may have shell…
CVE-2024-0095 — Critical (CVSS 9.0): NVIDIA Triton Inference Server for Linux and Windows contains a vulnerability where a user can inject forged logs and…
CVE-2024-25047 — High (CVSS 8.6): IBM Cognos Analytics 11.2.0 through 11.2.4 and 12.0.0 through 12.0.2 is vulnerable to injection attacks in application…
CVE-2025-57564 — High (CVSS 8.2): CubeAPM nightly-2025-08-01-1 allow unauthenticated attackers to inject arbitrary log entries into production systems…
CVE-2026-10745 — High (CVSS 7.9): Improper output neutralization for logs vulnerability in upKeeper Solutions upKeeper Instant Privilege Access on…

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