CVE-2026-15928 Cross-site scripting in XMLRPC-C
High 8.2
Published
Updated
Check this codebase for CVE-2026-15928 and fix it if it is affected.
What it is: CVE-2026-15928 is a high-severity cross-site scripting vulnerability in XMLRPC-C, published on 27 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-15928 in the wild and no public exploit code.
Affected product: XMLRPC-C. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-15928/ (Markdown: https://insights.sbomify.com/CVE-2026-15928/index.md)
Reflected XSS in XMLRPC-C library error pages allows attackers to execute arbitrary scripts in user browsers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-15928?
CVE-2026-15928 is a high-severity cross-site scripting vulnerability in XMLRPC-C, published on 27 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
XMLRPC-C Library versions 1.07 through 1.67.01 are vulnerable to a reflected cross-site scripting (XSS) vulnerability in the error page component.
Weakness: CWE-79
Which versions are affected by CVE-2026-15928?
Linux distribution packages (40)
xmlrpc-c AlmaLinux:8 | All versions | 1.51.0-11.el8_10.1 |
xmlrpc-c-c++ AlmaLinux:8 | All versions | 1.51.0-11.el8_10.1 |
xmlrpc-c-client AlmaLinux:8 | All versions | 1.51.0-11.el8_10.1 |
xmlrpc-c-client++ AlmaLinux:8 | All versions | 1.51.0-11.el8_10.1 |
xmlrpc-c-devel AlmaLinux:8 | All versions | 1.51.0-11.el8_10.1 |
xmlrpc-c AlmaLinux:9 | All versions | 1.51.0-17.el9_8 |
xmlrpc-c-c++ AlmaLinux:9 | All versions | 1.51.0-17.el9_8 |
xmlrpc-c-client AlmaLinux:9 | All versions | 1.51.0-17.el9_8 |
xmlrpc-c-client++ AlmaLinux:9 | All versions | 1.51.0-17.el9_8 |
xmlrpc-c-devel AlmaLinux:9 | All versions | 1.51.0-17.el9_8 |
xmlrpc-c Red Hat:enterprise_linux:8::baseos | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-apps-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-c++-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-client Red Hat:enterprise_linux:8::baseos | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-client++-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-client-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-apps-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-c++ Red Hat:enterprise_linux:8::crb | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-c++-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-client++ Red Hat:enterprise_linux:8::crb | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-client++-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-client-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-debugsource Red Hat:enterprise_linux:8::crb | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c-devel Red Hat:enterprise_linux:8::crb | All versions | 0:1.51.0-11.el8_10.1 |
xmlrpc-c Red Hat:enterprise_linux:9::appstream | All versions | 0:1.51.0-17.el9_8 |
xmlrpc-c-apps-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:1.51.0-17.el9_8 |
xmlrpc-c-c++-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:1.51.0-17.el9_8 |
xmlrpc-c-client Red Hat:enterprise_linux:9::appstream | All versions | 0:1.51.0-17.el9_8 |
xmlrpc-c-client++-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:1.51.0-17.el9_8 |
xmlrpc-c-client-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:1.51.0-17.el9_8 |
xmlrpc-c-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:1.51.0-17.el9_8 |
xmlrpc-c-debugsource Red Hat:enterprise_linux:9::appstream | All versions | 0:1.51.0-17.el9_8 |
xmlrpc-c-apps-debuginfo Red Hat:enterprise_linux:9::crb | All versions | 0:1.51.0-17.el9_8 |
xmlrpc-c-c++ Red Hat:enterprise_linux:9::crb | All versions | 0:1.51.0-17.el9_8 |
xmlrpc-c-c++-debuginfo Red Hat:enterprise_linux:9::crb | All versions | 0:1.51.0-17.el9_8 |
xmlrpc-c-client++ Red Hat:enterprise_linux:9::crb | All versions | 0:1.51.0-17.el9_8 |
xmlrpc-c-client++-debuginfo Red Hat:enterprise_linux:9::crb | All versions | 0:1.51.0-17.el9_8 |
How do I fix CVE-2026-15928?
Upgrade to a fixed version.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-15928 being exploited?
There is no known exploitation of CVE-2026-15928 in the wild and no public exploit code.
Sources
Also known as ALSA-2026:61316, ALSA-2026:64772, AZL-94010, DEBIAN-CVE-2026-15928, GHSA-mrjw-v97f-vmwh, OESA-2026-3384 and 20 more.