How severe is CVE-2021-44082?

CVE-2021-44082 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-44082 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-44082?

CVE-2021-44082 affects Textpattern. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-44082?

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-2021-44082 published?

CVE-2021-44082 was published on 2022-03-29 and last updated on 2026-06-17.

CVE-2021-44082

CVE-2021-44082 is a high-severity vulnerability in Textpattern with a CVSS 3.x base score of 8.3. 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-79.

Key facts

Severity: High (CVSS 3.x base score 8.3)
CVSS v2: 5.1
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Textpattern
Published: 2022-03-29
Last modified: 2026-06-17

Description

textpattern 4.8.7 is vulnerable to Cross Site Scripting (XSS) via /textpattern/index.php,Body. A remote and unauthenticated attacker can use XSS to trigger remote code execution by uploading a webshell. To do so they must first steal the CSRF token before submitting a file upload request.

Frequently asked questions

What is CVE-2021-44082?: textpattern 4.8.7 is vulnerable to Cross Site Scripting (XSS) via /textpattern/index.php,Body. A remote and unauthenticated attacker can use XSS to trigger remote code execution by uploading a webshell. To do so they must first steal the CSRF token before submitting a file upload request.
How severe is CVE-2021-44082?: CVE-2021-44082 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-44082 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-44082?: CVE-2021-44082 affects Textpattern. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-44082?: 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-2021-44082 published?: CVE-2021-44082 was published on 2022-03-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:textpattern:textpattern:4.8.7:*:*:*:*:*:*:*

More vulnerabilities in Textpattern

CVE-2020-19510 — Critical (CVSS 9.8): Textpattern 4.7.3 contains an aribtrary file load via the file_insert function in include/txp_file.php.
CVE-2018-7474 — Critical (CVSS 9.8): An issue was discovered in Textpattern CMS 4.6.2 and earlier. It is possible to inject SQL code in the variable "qty"…
CVE-2023-50038 — High (CVSS 8.8): There is an arbitrary file upload vulnerability in the background of textpattern cms v4.8.8, which leads to the loss of…
CVE-2023-24269 — High (CVSS 8.8): An arbitrary file upload vulnerability in the plugin upload function of Textpattern v4.8.8 allows attackers to execute…
CVE-2020-29458 — High (CVSS 8.8): Textpattern CMS 4.6.2 allows CSRF via the prefs subsystem.
CVE-2018-1000090 — High (CVSS 7.5): textpattern version version 4.6.2 contains a XML Injection vulnerability in Import XML feature that can result in…

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