How severe is CVE-2020-15853?

CVE-2020-15853 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2020-15853 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15853?

CVE-2020-15853 affects Fedoraproject Supybot-fedora. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-15853?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-15853 published?

CVE-2020-15853 was published on 2022-10-18 and last updated on 2026-06-17.

CVE-2020-15853

CVE-2020-15853 is a medium-severity vulnerability in Fedoraproject Supybot-fedora with a CVSS 3.x base score of 5.3. 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-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Fedoraproject Supybot-fedora
Published: 2022-10-18
Last modified: 2026-06-17

Description

supybot-fedora implements the command 'refresh', that refreshes the cache of all users from FAS. This takes quite a while to run, and zodbot stops responding to requests during this time.

Frequently asked questions

What is CVE-2020-15853?: supybot-fedora implements the command 'refresh', that refreshes the cache of all users from FAS. This takes quite a while to run, and zodbot stops responding to requests during this time.
How severe is CVE-2020-15853?: CVE-2020-15853 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2020-15853 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15853?: CVE-2020-15853 affects Fedoraproject Supybot-fedora. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-15853?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-15853 published?: CVE-2020-15853 was published on 2022-10-18 and last updated on 2026-06-17.

References

https://github.com/fedora-infra/supybot-fedora/issues/69

Affected products (1)

cpe:2.3:a:fedoraproject:supybot-fedora:-:*:*:*:*:*:*:*

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