How severe is CVE-2020-36962?

CVE-2020-36962 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-36962 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-36962?

CVE-2020-36962 affects Tendenci. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-36962?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2020-36962 have an EU (EUVD) identifier?

Yes. CVE-2020-36962 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30887.

When was CVE-2020-36962 published?

CVE-2020-36962 was published on 2026-01-28 and last updated on 2026-06-17.

CVE-2020-36962

CVE-2020-36962 is a critical-severity vulnerability in Tendenci with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-1236.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 5.3
EPSS exploit prediction: 11% (95th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2020-30887
Weakness: CWE-1236
Affected product: Tendenci
Published: 2026-01-28
Last modified: 2026-06-17

Description

Tendenci 12.3.1 contains a CSV formula injection vulnerability in the contact form message field that allows attackers to inject malicious formulas during export. Attackers can submit crafted payloads like '=10+20+cmd|' /C calc'!A0' in the message field to trigger arbitrary command execution when the CSV is opened in spreadsheet applications.

Frequently asked questions

What is CVE-2020-36962?: Tendenci 12.3.1 contains a CSV formula injection vulnerability in the contact form message field that allows attackers to inject malicious formulas during export. Attackers can submit crafted payloads like '=10+20+cmd|' /C calc'!A0' in the message field to trigger arbitrary command execution when the CSV is opened in spreadsheet applications.
How severe is CVE-2020-36962?: CVE-2020-36962 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-36962 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-36962?: CVE-2020-36962 affects Tendenci. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-36962?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2020-36962 have an EU (EUVD) identifier?: Yes. CVE-2020-36962 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30887.
When was CVE-2020-36962 published?: CVE-2020-36962 was published on 2026-01-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tendenci:tendenci:12.3.1:*:*:*:*:*:*:*

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