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CVE-2026-55464· NVD / CVE Program· CNA GitHub_M

Snipe-IT: Stored XSS via Markdown custom field

Snipe-IT is an IT asset/license management system. Prior to 8.6.2, CommonMark escapes raw HTML but does not sanitize javascript: URIs in Markdown hyperlinks, allowing a user with assets.edit permission to place a malicious link in a markdown-textarea custom field that executes arbitrary JavaScript when another user opens the asset detail page and clicks the link. This issue is fixed in version 8.6.2.

MediumCVSS 4.8 · v4.0—No exploit Fix available
Published
Jul 10, 2026
Updated
Jul 13, 2026
EPSS
0.3% · 20th percentile
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Action score

19

Monitor

Low priority for now.

CVSS
19 / 40 · 4.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
4.8
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

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Affected systems

VendorProduct
snipeitappsnipe-it

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • snipeitapp snipe-itbefore 8.6.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • grokability snipe-it

    • < 8.6.2affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Packagistsnipe/snipe-itbefore 8.6.28.6.2

Same product

snipeitapp: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-37709Insecure Permissions vulnerability in grokability snipe-it v.8.4.0 and before and fixed after 2026-03-10 commit 676a9958 allows a remote att
    39Monitor
  • CVE-2025-63601Snipe-IT before version 8.3.3 contains a remote code execution vulnerability that allows an authenticated attacker to upload a malicious bac
    39Monitor
  • CVE-2026-86738Snipe-IT before 8.7.0 CSS Injection via Custom CSS
    37Monitor
  • CVE-2023-5511Cross-Site Request Forgery (CSRF) in snipe/snipe-it
    35Monitor
  • CVE-2022-23064Snipe-IT - Host Header Injection
    35Monitor
  • CVE-2022-0611Missing Authorization in snipe/snipe-it
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
grokability snipe-it8.6.2 · descriptionVendor (CNA)
Packagist:snipe/snipe-it8.6.2Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-8673860 days apartSnipe-IT before 8.7.0 CSS Injection via Custom CSS
    37Monitor
  • CVE-2026-6236876 days apartSnipe-IT: Stored XSS via Custom Field name in asset-list column headers
    33Monitor
  • CVE-2026-6180740 days apartSnipe-IT: Stored DOM XSS via table selected-count IDs
    25Monitor
  • CVE-2026-554660 days apartSnipe-IT: Stored XSS via inline-served attachment
    24Monitor
  • CVE-2026-554810 days apartSnipe-IT: CSS Injection via `header_color` Setting
    24Monitor
  • CVE-2025-64027232 days apartSnipe-IT v8.3.4 (build 20218) contains a reflected cross-site scripting (XSS) vulnerability in the CSV Import workflow.
    24Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
A
Scope
X

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records