CVE-2020-24393
Improper Certificate Validation in TweetStream
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2020-24393- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
CVE ListNo score
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.
- Record
CVE-2020-24393- Updated
- 2026-11-02
EUVDEUVD-2021-0775No score
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.
- Record
EUVD-2021-0775- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6hrm-jqp3-64cv
Improper Certificate Validation in TweetStream
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.
- Record
GHSA-6hrm-jqp3-64cv- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2020-24393- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-6hrm-jqp3-64cv
Improper Certificate Validation in TweetStream
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.
- Record
GHSA-6hrm-jqp3-64cv- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
tweetstreamRubyGems | through 2.6.1 | None known |
tweetstreamRubyGems | through 2.6.1, plus listed versions 0.1.00.1.10.1.20.1.30.1.4 Show 27 moreShow less0.1.50.1.70.1.80.1.90.3.01.0.01.0.11.0.21.0.31.0.41.0.51.1.01.1.0.rc11.1.0.rc21.1.11.1.21.1.31.1.41.1.52.0.02.0.12.1.02.2.02.3.02.4.02.5.02.6.0 | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-24393 is a medium vulnerability (CVSS 5.9) in Tweetstream Project Tweetstream, published February 19, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.86%, the 58th percentile. No source names a fixed version.