CVE-2021-45848
Nicotine+ DoS on Null Character in Download Request
Denial of service (DoS) vulnerability in Nicotine+ 3.0.3 and later allows a user with a modified Soulseek client to crash Nicotine+ by sending a file download request with a file path containing a null character.
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
NVD Score used
Denial of service (DoS) vulnerability in Nicotine+ 3.0.3 and later allows a user with a modified Soulseek client to crash Nicotine+ by sending a file download request with a file path containing a null character.
- Record
CVE-2021-45848- 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 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-116
- Updated
- 2026-11-02
CVE List No score
Denial of service (DoS) vulnerability in Nicotine+ 3.0.3 and later allows a user with a modified Soulseek client to crash Nicotine+ by sending a file download request with a file path containing a null character.
- Record
CVE-2021-45848- Updated
- 2026-11-02
EUVDEUVD-2022-1488 No score
Denial of service (DoS) vulnerability in Nicotine+ 3.0.3 and later allows a user with a modified Soulseek client to crash Nicotine+ by sending a file download request with a file path containing a null character.
- Record
EUVD-2022-1488- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-p4v2-r99v-wjc2
Nicotine+ DoS on Null Character in Download Request
Denial of service (DoS) vulnerability in Nicotine+ starting with version 3.0.3 and prior to version 3.2.1 allows a user with a modified Soulseek client to crash Nicotine+ by sending a file download request with a file path containing a null character.
- Record
GHSA-p4v2-r99v-wjc2- 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 - Weakness
- CWE-116
- Updated
- 2026-11-02
OSV
Denial of service (DoS) vulnerability in Nicotine+ 3.0.3 and later allows a user with a modified Soulseek client to crash Nicotine+ by sending a file download request with a file path containing a null character.
- Record
CVE-2021-45848- 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-p4v2-r99v-wjc2
Nicotine+ DoS on Null Character in Download Request
Denial of service (DoS) vulnerability in Nicotine+ starting with version 3.0.3 and prior to version 3.2.1 allows a user with a modified Soulseek client to crash Nicotine+ by sending a file download request with a file path containing a null character.
- Record
GHSA-p4v2-r99v-wjc2- 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 - Weakness
- CWE-116
- Updated
- 2026-11-02
OSVPYSEC-2026-687
Nicotine+ DoS on Null Character in Download Request
Denial of service (DoS) vulnerability in Nicotine+ starting with version 3.0.3 and prior to version 3.2.1 allows a user with a modified Soulseek client to crash Nicotine+ by sending a file download request with a file path containing a null character.
- Record
PYSEC-2026-687- 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
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
nicotine-plusPyPI |
3.0.3 up to 3.2.1 | 3.2.1 |
nicotine-plusPyPI |
3.0.3 up to 3.2.1, plus listed versions 3.0.43.0.53.0.63.1.03.1.13.2.0 |
3.2.1 |
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-2021-45848 is a high vulnerability (CVSS 7.5) in Fedoraproject Fedora, published March 15, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.62%, the 76th percentile. Fixed in nicotine-plus 3.2.1.
References
github.com/nicotine-plus/nicotine-plus/issues/1777
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HWYV53KERFH2EC4XI2IVVQFTV75E5XM6
security.gentoo.org/glsa/202210-20
nvd.nist.gov/vuln/detail/CVE-2021-45848
pypi.org/project/nicotine-plus