CVE-2021-26642
CVE-2021-26642 is a high-severity vulnerability in Xpressengine with a CVSS 3.x base score of 8.8. 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-434.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- EPSS exploit prediction: 1% (63rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-434
- Affected product: Xpressengine
- Published:
- Last modified:
Description
When uploading an image file to a bulletin board developed with XpressEngine, a vulnerability in which an arbitrary file can be uploaded due to insufficient verification of the file. A remote attacker can use this vulnerability to execute arbitrary code on the server where the bulletin board is running.
Frequently asked questions
- What is CVE-2021-26642?
- When uploading an image file to a bulletin board developed with XpressEngine, a vulnerability in which an arbitrary file can be uploaded due to insufficient verification of the file. A remote attacker can use this vulnerability to execute arbitrary code on the server where the bulletin board is running.
- How severe is CVE-2021-26642?
- CVE-2021-26642 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-26642 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-26642?
- CVE-2021-26642 affects Xpressengine. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-26642?
- 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-2021-26642 published?
- CVE-2021-26642 was published on 2023-01-20 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:xpressengine:xpressengine:*:*:*:*:*:*:*:*
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