CVE-2021-23927
CVE-2021-23927 is a medium-severity vulnerability in Open-xchange Open-xchange Appsuite with a CVSS 3.x base score of 6.4. 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-918.
Key facts
- Severity: Medium (CVSS 3.x base score 6.4)
- CVSS v2: 5.5
- EPSS exploit prediction: 1% (51st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-918
- Affected product: Open-xchange Open-xchange Appsuite
- Published:
- Last modified:
Description
OX App Suite through 7.10.4 allows SSRF via a URL with an @ character in an appsuite/api/oauth/proxy PUT request.
Frequently asked questions
- What is CVE-2021-23927?
- OX App Suite through 7.10.4 allows SSRF via a URL with an @ character in an appsuite/api/oauth/proxy PUT request.
- How severe is CVE-2021-23927?
- CVE-2021-23927 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2021-23927 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-23927?
- CVE-2021-23927 affects Open-xchange Open-xchange Appsuite. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-23927?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-23927 published?
- CVE-2021-23927 was published on 2021-01-12 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:open-xchange:open-xchange_appsuite:*:*:*:*:*:*:*:*
More vulnerabilities in Open-xchange Open-xchange Appsuite
- CVE-2017-13667 — Critical (CVSS 9.9): OX Software GmbH OX App Suite 7.8.4 and earlier is affected by: SSRF.
- CVE-2020-12645 — Critical (CVSS 9.8): OX App Suite 7.10.1 to 7.10.3 has improper input validation for rate limits with a crafted User-Agent header, spoofed…
- CVE-2019-7158 — Critical (CVSS 9.8): OX App Suite 7.10.0 and earlier has Incorrect Access Control.
- CVE-2017-5212 — Critical (CVSS 9.8): Open-Xchange GmbH OX App Suite 7.8.3 is affected by: Incorrect Access Control.
- CVE-2017-5210 — Critical (CVSS 9.8): Open-Xchange GmbH OX App Suite 7.8.3 and earlier is affected by: Information Exposure.
- CVE-2017-17060 — Critical (CVSS 9.8): OX Software GmbH OX App Suite 7.8.4 and earlier is affected by: Insecure Permissions.
All CVEs affecting Open-xchange Open-xchange Appsuite →
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