CVE-2021-3777
Inefficient Regular Expression Complexity in daaku/nodejs-tmpl
nodejs-tmpl is vulnerable to Inefficient Regular Expression Complexity
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Inefficient Regular Expression Complexity in daaku/nodejs-tmpl
nodejs-tmpl is vulnerable to Inefficient Regular Expression Complexity
- Record
CVE-2021-3777- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-1333
- Updated
- 2026-11-02
EUVDEUVD-2021-2085
nodejs-tmpl is vulnerable to Inefficient Regular Expression Complexity
- Record
EUVD-2021-2085- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jgrx-mgxx-jf9v
tmpl vulnerable to Inefficient Regular Expression Complexity which may lead to resource exhaustion
nodejs-tmpl is simple string formatting. tmpl is vulnerable to Inefficient Regular Expression Complexity which may lead to resource exhaustion.
- Record
GHSA-jgrx-mgxx-jf9v- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
NVD
nodejs-tmpl is vulnerable to Inefficient Regular Expression Complexity
- Record
CVE-2021-3777- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 7.8 High
AV:N/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-1333
- Updated
- 2026-11-02
OSV
nodejs-tmpl is vulnerable to Inefficient Regular Expression Complexity
- Record
CVE-2021-3777- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-jgrx-mgxx-jf9v
tmpl vulnerable to Inefficient Regular Expression Complexity which may lead to resource exhaustion
nodejs-tmpl is simple string formatting. tmpl is vulnerable to Inefficient Regular Expression Complexity which may lead to resource exhaustion.
- Record
GHSA-jgrx-mgxx-jf9v- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSVCLSA-2026-1782781172No score
TuxCare security update for tmpl (1 CVE)
TuxCare rebuilt tmpl to address 1 CVE. Fixed in 1.0.4-tuxcare.1.
- Record
CLSA-2026-1782781172- Updated
- 2026-11-02
Affected products
Affected packages
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-2021-3777 is a high vulnerability (CVSS 7.5) in Daaku Daaku/nodejs-tmpl, published September 15, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.31%, the 71st percentile. Fixed in tmpl 1.0.5.