How severe is CVE-2022-40743?

CVE-2022-40743 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2022-40743 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-40743?

CVE-2022-40743 affects Apache Traffic Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-40743?

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

When was CVE-2022-40743 published?

CVE-2022-40743 was published on 2022-12-19 and last updated on 2026-06-17.

CVE-2022-40743

CVE-2022-40743 is a medium-severity vulnerability in Apache Traffic Server with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Apache Traffic Server
Published: 2022-12-19
Last modified: 2026-06-17

Description

Improper Input Validation vulnerability for the xdebug plugin in Apache Software Foundation Apache Traffic Server can lead to cross site scripting and cache poisoning attacks.This issue affects Apache Traffic Server: 9.0.0 to 9.1.3. Users should upgrade to 9.1.4 or later versions.

Frequently asked questions

What is CVE-2022-40743?: Improper Input Validation vulnerability for the xdebug plugin in Apache Software Foundation Apache Traffic Server can lead to cross site scripting and cache poisoning attacks.This issue affects Apache Traffic Server: 9.0.0 to 9.1.3. Users should upgrade to 9.1.4 or later versions.
How severe is CVE-2022-40743?: CVE-2022-40743 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2022-40743 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-40743?: CVE-2022-40743 affects Apache Traffic Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-40743?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-40743 published?: CVE-2022-40743 was published on 2022-12-19 and last updated on 2026-06-17.

References

https://lists.apache.org/thread/mrj2lg4s0hf027rk7gz8t7hbn9xpfg02

Affected products (1)

cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*

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