How severe is CVE-2020-24393?

CVE-2020-24393 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-24393 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-24393?

CVE-2020-24393 affects Tweetstream Project Tweetstream. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-24393?

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

When was CVE-2020-24393 published?

CVE-2020-24393 was published on 2021-02-19 and last updated on 2026-06-17.

CVE-2020-24393

CVE-2020-24393 is a medium-severity vulnerability in Tweetstream Project Tweetstream with a CVSS 3.x base score of 5.9. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Tweetstream Project Tweetstream
Published: 2021-02-19
Last modified: 2026-06-17

Description

TweetStream 2.6.1 uses the library eventmachine in an insecure way that does not have TLS hostname validation. This allows an attacker to perform a man-in-the-middle attack.

Frequently asked questions

What is CVE-2020-24393?: TweetStream 2.6.1 uses the library eventmachine in an insecure way that does not have TLS hostname validation. This allows an attacker to perform a man-in-the-middle attack.
How severe is CVE-2020-24393?: CVE-2020-24393 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-24393 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-24393?: CVE-2020-24393 affects Tweetstream Project Tweetstream. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-24393?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-24393 published?: CVE-2020-24393 was published on 2021-02-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tweetstream_project:tweetstream:2.6.1:*:*:*:*:ruby:*:*

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