How severe is CVE-2020-15275?

CVE-2020-15275 has a CVSS 3.x base score of 8.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2020-15275 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15275?

CVE-2020-15275 affects Moinmo Moinmoin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-15275?

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-2020-15275 published?

CVE-2020-15275 was published on 2020-11-11 and last updated on 2026-06-17.

CVE-2020-15275

CVE-2020-15275 is a high-severity vulnerability in Moinmo Moinmoin with a CVSS 3.x base score of 8.7. 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 8.7)
CVSS v2: 3.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Moinmo Moinmoin
Published: 2020-11-11
Last modified: 2026-06-17

Description

MoinMoin is a wiki engine. In MoinMoin before version 1.9.11, an attacker with write permissions can upload an SVG file that contains malicious javascript. This javascript will be executed in a user's browser when the user is viewing that SVG file on the wiki. Users are strongly advised to upgrade to a patched version. MoinMoin Wiki 1.9.11 has the necessary fixes and also contains other important fixes.

Frequently asked questions

What is CVE-2020-15275?: MoinMoin is a wiki engine. In MoinMoin before version 1.9.11, an attacker with write permissions can upload an SVG file that contains malicious javascript. This javascript will be executed in a user's browser when the user is viewing that SVG file on the wiki. Users are strongly advised to upgrade to a patched version. MoinMoin Wiki 1.9.11 has the necessary fixes and also contains other important fixes.
How severe is CVE-2020-15275?: CVE-2020-15275 has a CVSS 3.x base score of 8.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2020-15275 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15275?: CVE-2020-15275 affects Moinmo Moinmoin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-15275?: 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-2020-15275 published?: CVE-2020-15275 was published on 2020-11-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:moinmo:moinmoin:*:*:*:*:*:*:*:*

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