How severe is CVE-2020-26213?

CVE-2020-26213 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 none, and availability high.

Is CVE-2020-26213 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-26213?

CVE-2020-26213 affects Teler Project Teler. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-26213?

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

When was CVE-2020-26213 published?

CVE-2020-26213 was published on 2020-11-06 and last updated on 2026-06-17.

CVE-2020-26213

CVE-2020-26213 is a medium-severity vulnerability in Teler Project Teler 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-476.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 5.0
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Teler Project Teler
Published: 2020-11-06
Last modified: 2026-06-17

Description

In teler before version 0.0.1, if you run teler inside a Docker container and encounter `errors.Exit` function, it will cause denial-of-service (`SIGSEGV`) because it doesn't get process ID and process group ID of teler properly to kills. The issue is patched in teler 0.0.1 and 0.0.1-dev5.1.

Frequently asked questions

What is CVE-2020-26213?: In teler before version 0.0.1, if you run teler inside a Docker container and encounter `errors.Exit` function, it will cause denial-of-service (`SIGSEGV`) because it doesn't get process ID and process group ID of teler properly to kills. The issue is patched in teler 0.0.1 and 0.0.1-dev5.1.
How severe is CVE-2020-26213?: CVE-2020-26213 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 none, and availability high.
Is CVE-2020-26213 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-26213?: CVE-2020-26213 affects Teler Project Teler. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-26213?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-26213 published?: CVE-2020-26213 was published on 2020-11-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:teler_project:teler:*:*:*:*:*:*:*:*

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