Medium severity6.5NVD Advisory· Published Jul 2, 2020· Updated Jun 17, 2026
CVE-2020-15091
CVE-2020-15091
Description
TenderMint from version 0.33.0 and before version 0.33.6 allows block proposers to include signatures for the wrong block. This may happen naturally if you start a network, have it run for some time and restart it (without changing chainID). A malicious block proposer (even with a minimal amount of stake) can use this vulnerability to completely halt the network. This issue is fixed in Tendermint 0.33.6 which checks all the signatures are for the block with 2/3+ majority before creating a commit.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/tendermint/tendermintGo | < 0.33.6 | 0.33.6 |
Affected products
3cpe:2.3:a:tendermint:tendermint:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:tendermint:tendermint:*:*:*:*:*:*:*:*range: >=0.33.0,<0.33.6
- (no CPE)range: >= 0.33.0, < 0.33.6
Patches
Vulnerability mechanics
References
8- github.com/tendermint/tendermint/commit/480b995a31727593f58b361af979054d17d84340nvdPatchThird Party AdvisoryWEB
- github.com/tendermint/tendermint/issues/4926nvdExploitIssue TrackingThird Party AdvisoryWEB
- github.com/tendermint/tendermint/security/advisories/GHSA-6jqj-f58p-mrw3nvdExploitThird Party AdvisoryWEB
- github.com/advisories/GHSA-6jqj-f58p-mrw3ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2020-15091ghsaADVISORY
- github.com/tendermint/tendermint/blob/master/CHANGELOG.mdghsaWEB
- github.com/tendermint/tendermint/pull/5426ghsaWEB
- pkg.go.dev/vuln/GO-2021-0090ghsaWEB
News mentions
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