CVE-2020-35962: The sellTokenForLRC function in the vault protocol in the smart contract implementation for Loopring (LRC), an

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HIGH 7.5REMOTEMITIGATE

CVE-2020-35962 is a high-severity flaw (CVSS 7.5) affecting loopring. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The sellTokenForLRC function in the vault protocol in the smart contract implementation for Loopring (LRC), an Ethereum token, lacks access control for fee swapping and thus allows price manipulation.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Published	2021-01-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: loopring

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-01-03 07:15 UTCPublished CVE record published
2026-06-17 03:14 UTCUpdated Record last modified

loopring loopring MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy loopring || rpm -q loopring || loopring --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-35962?

loopring: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-35962 being exploited?

CVE-2020-35962 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-35962 affect?

CVE-2020-35962 affects loopring. Severity is high (CVSS 7.5). The sellTokenForLRC function in the vault protocol in the smart contract implementation for Loopring (LRC), an Ethereum token, lacks access control for fee swapping and thus allows price manipulation.

How urgent is CVE-2020-35962?

Priority 54/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

HashiCorp Vault vulnerabilities

References

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