CVE-2021-40658
CVE-2021-40658 is a medium-severity vulnerability in Textpattern with a CVSS 3.x base score of 4.8. 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-79.
Key facts
- Severity: Medium (CVSS 3.x base score 4.8)
- CVSS v2: 3.5
- EPSS exploit prediction: 1% (42nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Textpattern
- Published:
- Last modified:
Description
Textpattern 4.8.7 is affected by a HTML injection vulnerability through “Content>Write>Body”.
Frequently asked questions
- What is CVE-2021-40658?
- Textpattern 4.8.7 is affected by a HTML injection vulnerability through “Content>Write>Body”.
- How severe is CVE-2021-40658?
- CVE-2021-40658 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2021-40658 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-40658?
- CVE-2021-40658 affects Textpattern. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-40658?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-40658 published?
- CVE-2021-40658 was published on 2022-06-14 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-2021-44082 — High (CVSS 8.3): textpattern 4.8.7 is vulnerable to Cross Site Scripting (XSS) via /textpattern/index.php,Body. A remote and…
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