How severe is CVE-2023-41835?

CVE-2023-41835 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-41835 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-41835?

CVE-2023-41835 affects Apache Struts. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-41835?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-41835 published?

CVE-2023-41835 was published on 2023-12-05 and last updated on 2026-06-17.

CVE-2023-41835

CVE-2023-41835 is a high-severity vulnerability in Apache Struts with a CVSS 3.x base score of 7.5. 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-459.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-459
Affected product: Apache Struts
Published: 2023-12-05
Last modified: 2026-06-17

Description

When a Multipart request is performed but some of the fields exceed the maxStringLength limit, the upload files will remain in struts.multipart.saveDir even if the request has been denied. Users are recommended to upgrade to versions Struts 2.5.32 or 6.1.2.2 or Struts 6.3.0.1 or greater, which fixe this issue.

Frequently asked questions

What is CVE-2023-41835?: When a Multipart request is performed but some of the fields exceed the maxStringLength limit, the upload files will remain in struts.multipart.saveDir even if the request has been denied. Users are recommended to upgrade to versions Struts 2.5.32 or 6.1.2.2 or Struts 6.3.0.1 or greater, which fixe this issue.
How severe is CVE-2023-41835?: CVE-2023-41835 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-41835 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-41835?: CVE-2023-41835 affects Apache Struts. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-41835?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-41835 published?: CVE-2023-41835 was published on 2023-12-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*

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