CVE-2021-27989
CVE-2021-27989 is a medium-severity vulnerability in Appspace with a CVSS 3.x base score of 5.4. 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 5.4)
- CVSS v2: 3.5
- EPSS exploit prediction: 0% (39th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Appspace
- Published:
- Last modified:
Description
Appspace 6.2.4 is vulnerable to stored cross-site scripting (XSS) in multiple parameters within /medianet/sgcontentset.aspx.
Frequently asked questions
- What is CVE-2021-27989?
- Appspace 6.2.4 is vulnerable to stored cross-site scripting (XSS) in multiple parameters within /medianet/sgcontentset.aspx.
- How severe is CVE-2021-27989?
- CVE-2021-27989 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2021-27989 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-27989?
- CVE-2021-27989 affects Appspace. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-27989?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-27989 published?
- CVE-2021-27989 was published on 2021-04-14 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:appspace:appspace:6.2.4:*:*:*:*:*:*:*
More vulnerabilities in Appspace
- CVE-2021-27670 — Critical (CVSS 9.8): Appspace 6.2.4 allows SSRF via the api/v1/core/proxy/jsonprequest url parameter.
- CVE-2021-27990 — High (CVSS 7.5): Appspace 6.2.4 is vulnerable to a broken authentication mechanism where pages such as /medianet/mail.aspx can be called…
- CVE-2021-27704 — Medium (CVSS 6.5): Appspace 6.2.4 is affected by Incorrect Access Control via the Appspace Web Portal password reset page.
- CVE-2021-27564 — Medium (CVSS 5.4): A stored XSS issue exists in Appspace 6.2.4. After a user is authenticated and enters an XSS payload under the groups…
Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities
- CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
- CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
- CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
- CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
- CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
- CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…
Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →