CVE-2020-26226
Secret disclosure in semantic-release
In the npm package semantic-release before version 17.2.3, secrets that would normally be masked by semantic-release can be accidentally disclosed if they contain characters that become encoded when included in a URL. Secrets that do not contain characters that become encoded when included in a URL are already masked properly. The issue is fixed in version 17.2.3.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Secret disclosure in semantic-release
In the npm package semantic-release before version 17.2.3, secrets that would normally be masked by semantic-release can be accidentally disclosed if they contain characters that become encoded when included in a URL. Secrets that do not contain characters that become encoded when included in a URL are already masked properly. The issue is fixed in version 17.2.3.
- Record
CVE-2020-26226- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - Weakness
- CWE-116
- Updated
- 2026-11-02
EUVDEUVD-2020-1469
In the npm package semantic-release before version 17.2.3, secrets that would normally be masked by semantic-release can be accidentally disclosed if they contain characters that become encoded when included in a URL. Secrets that do not contain characters that become encoded when included in a URL are already masked properly. The issue is fixed in version 17.2.3.
- Record
EUVD-2020-1469- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r2j6-p67h-q639
Secret disclosure when containing characters that become URI encoded
Impact
Secrets that would normally be masked by semantic-release can be accidentally disclosed if they contain characters that become encoded when included in a URL.
Patches
Fixed in v17.2.3
Workarounds
Secrets that do not contain characters that become encoded when included in a URL are already masked properly.
- Record
GHSA-r2j6-p67h-q639- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - Weakness
- CWE-116
- Updated
- 2026-11-02
NVD
In the npm package semantic-release before version 17.2.3, secrets that would normally be masked by semantic-release can be accidentally disclosed if they contain characters that become encoded when included in a URL. Secrets that do not contain characters that become encoded when included in a URL are already masked properly. The issue is fixed in version 17.2.3.
- Record
CVE-2020-26226- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:N - Weakness
- CWE-116
- Updated
- 2026-11-02
OSV
In the npm package semantic-release before version 17.2.3, secrets that would normally be masked by semantic-release can be accidentally disclosed if they contain characters that become encoded when included in a URL. Secrets that do not contain characters that become encoded when included in a URL are already masked properly. The issue is fixed in version 17.2.3.
- Record
CVE-2020-26226- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-r2j6-p67h-q639
Secret disclosure when containing characters that become URI encoded
Impact
Secrets that would normally be masked by semantic-release can be accidentally disclosed if they contain characters that become encoded when included in a URL.
Patches
Fixed in v17.2.3
Workarounds
Secrets that do not contain characters that become encoded when included in a URL are already masked properly.
- Record
GHSA-r2j6-p67h-q639- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - Weakness
- CWE-116
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
semantic-releasenpm |
through 17.2.2 | 17.2.3 |
semantic-releasenpm |
before 17.2.3 | 17.2.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-26226 is a high vulnerability (CVSS 8.1) in Semantic-release, published November 18, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.40%, the 72nd percentile. Fixed in semantic-release 17.2.3.