How severe is CVE-2019-20809?

CVE-2019-20809 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2019-20809 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-20809?

CVE-2019-20809 affects Compound Price Oracle. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-20809?

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

When was CVE-2019-20809 published?

CVE-2019-20809 was published on 2020-06-03 and last updated on 2026-06-17.

CVE-2019-20809

CVE-2019-20809 is a high-severity vulnerability in Compound Price Oracle with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Compound Price Oracle
Published: 2020-06-03
Last modified: 2026-06-17

Description

The price oracle in PriceOracle.sol in Compound Finance Compound Price Oracle 1.0 through 2.0 allows a price poster to set an invalid asset price via the setPrice function, and consequently violate the intended limits on price swings.

Frequently asked questions

What is CVE-2019-20809?: The price oracle in PriceOracle.sol in Compound Finance Compound Price Oracle 1.0 through 2.0 allows a price poster to set an invalid asset price via the setPrice function, and consequently violate the intended limits on price swings.
How severe is CVE-2019-20809?: CVE-2019-20809 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2019-20809 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-20809?: CVE-2019-20809 affects Compound Price Oracle. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-20809?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-20809 published?: CVE-2019-20809 was published on 2020-06-03 and last updated on 2026-06-17.

References

https://privacylog.blogspot.com/2019/10/compound-finance-zero-day-prices-can.html

Affected products (1)

cpe:2.3:a:compound:price_oracle:*:*:*:*:*:*:*:*