CVE-2021-41559
Quadratic blowup in Convert::xml2array()
Silverstripe silverstripe/framework 4.8.1 has a quadratic blowup in Convert::xml2array() that enables a remote attack via a crafted XML document.
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
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Silverstripe silverstripe/framework 4.8.1 has a quadratic blowup in Convert::xml2array() that enables a remote attack via a crafted XML document.
- Record
CVE-2021-41559- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:N/A:P - Weakness
- CWE-776
- Updated
- 2026-11-02
CVE List No score
Silverstripe silverstripe/framework 4.8.1 has a quadratic blowup in Convert::xml2array() that enables a remote attack via a crafted XML document.
- Record
CVE-2021-41559- Updated
- 2026-11-02
EUVDEUVD-2022-6007 No score
Silverstripe silverstripe/framework 4.8.1 has a quadratic blowup in Convert::xml2array() that enables a remote attack via a crafted XML document.
- Record
EUVD-2022-6007- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9fmg-89fx-r33w
Quadratic blowup in Convert::xml2array()
Silverstripe silverstripe/framework 4.x until 4.10.9 has a quadratic blowup in Convert::xml2array() that enables a remote attack via a crafted XML document.
- Record
GHSA-9fmg-89fx-r33w- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-776
- Updated
- 2026-11-02
OSV
Silverstripe silverstripe/framework 4.8.1 has a quadratic blowup in Convert::xml2array() that enables a remote attack via a crafted XML document.
- Record
CVE-2021-41559- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-9fmg-89fx-r33w
Quadratic blowup in Convert::xml2array()
Silverstripe silverstripe/framework 4.x until 4.10.9 has a quadratic blowup in Convert::xml2array() that enables a remote attack via a crafted XML document.
- Record
GHSA-9fmg-89fx-r33w- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-776
- Updated
- 2026-11-02
OSVBIT-silverstripe-2021-41559 No score
Silverstripe silverstripe/framework 4.8.1 has a quadratic blowup in Convert::xml2array() that enables a remote attack via a crafted XML document.
- Record
BIT-silverstripe-2021-41559- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
silverstripe/frameworkPackagist |
4.0.0 up to 4.10.9 | 4.10.9 |
silverstripeBitnami |
before 4.10.9 | 4.10.9 |
silverstripe/frameworkPackagist |
4.0.0 up to 4.10.9, plus listed versions 4.0.14.0.1-rc14.0.24.0.34.0.4 Show 45 moreShow less4.0.54.0.64.0.74.1.04.1.0-rc14.1.0-rc24.1.14.1.24.1.34.1.44.1.54.10.04.10.0-beta14.10.0-rc14.10.14.10.24.10.34.10.44.10.54.10.64.10.74.10.84.2.04.2.0-beta14.2.14.2.24.2.34.2.44.2.54.3.04.3.0-rc14.3.14.3.24.3.34.3.44.3.54.4.04.4.0-rc14.4.14.4.24.4.34.4.44.4.54.4.64.4.7 |
4.10.9 |
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-2021-41559 is a medium vulnerability (CVSS 6.5) in Silverstripe, published June 28, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.09%, the 65th percentile. Fixed in silverstripe/framework 4.10.9.
References
silverstripe.org/download/security-releases
github.com/silverstripe/silverstripe-framework/releases
nvd.nist.gov/vuln/detail/CVE-2021-41559
Left out here: 32 versions. The JSON record has them.