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CVE-2026-13189· NVD / CVE Program· CNA ProgressSoftware

SpellChecker DictionaryLanguage Path Traversal Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to v2026.2.708, insufficient validation of the language parameter in the spell check handler may allow an attacker to influence server-side file path resolution and trigger unintended server-side requests.

HighCVSS 7.5 · v3.1—No exploit No fix recorded
Published
Jul 22, 2026
Updated
Aug 6, 2026
EPSS
0.4% · 28th percentile
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Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · ProgressSoftware
7.5
NVD has not scored this yet; the score shown is the CNA’s.

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

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Affected systems

VendorProduct
progresstelerik ui for asp.net ajax

Affected versions

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

  • progress telerik ui for asp.net ajax2011.2712 and later · before 2026.2.708

Versions reported by the vendor

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

  • Progress Software Telerik UI for ASP.NET AJAX

    • 2011.2.712 and later · before 2026.2.708affected

Same product

progress: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-11357Progress Telerik UI for ASP.NET AJAX before R2 2017 SP2 does not properly restrict user input to RadAsyncUpload, which allows remote attackeKEV
    92Now
  • CVE-2021-28141An issue was discovered in Progress Telerik UI for ASP.NET AJAX 2021.1.224.
    40Plan
  • CVE-2026-6023Deserialization of Untrusted Data Vulnerability in Telerik UI for ASP.NET AJAX
    39Monitor
  • CVE-2025-3600Unsafe Reflection Vulnerability in Telerik UI for ASP.NET AJAX
    37Monitor
  • CVE-2026-13190PersistenceFramework Unsafe Type Resolution Vulnerability in Telerik UI for ASP.NET AJAX
    32Monitor
  • CVE-2026-13187DialogHandler Provider Type Tampering Vulnerability in Telerik UI for ASP.NET AJAX
    32Monitor

Remediation

Which version to upgrade to

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

No fix version is recorded for this entry. Check the references for vendor advisories.

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.

No commit or PR link among the references.

Credits

All researchers

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

Variant candidates

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

No nightly-computed relations.

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-36 · Absolute Path Traversal

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd-secondary

Attack context

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

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

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

All records