9.8

CVE-2026-44825: apache software foundation apache solr Use of Hard-coded Credentials

CVSS: 9.8v3.1CriticalAnalyzed
AliasesUBUNTU-CVE-2026-44825CGA-2pfj-57g3-v6fhCGA-4hfj-vfwf-rvpr
Published 01-06-2026Last modified 02-06-2026
Open JSON

Vulnerability summary

CVE-2026-44825 is a critical (CVSS 9.8) Use of Hard-coded Credentials vulnerability in apache software foundation apache solr. EPSS estimates a 2.84% chance of exploitation in the next 30 days, higher than 86.4% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
2.84%
0%100%
Low · -0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 01-06-2026
    PublishedVulnerability first disclosed.
  2. 02-06-2026
    Last modifiedVulnerability information updated.

Description

Hardcoded credentials in the Basic Authentication setup tool (bin/solr auth enable) in Apache Solr versions 9.4.0 through 9.10.1 and 10.0.0 allows a remote attacker to gain full administrative access to the cluster via publicly known default credentials installed silently alongside the user-specified account. As an immediate workaround without upgrading, delete the template users (superadmin, admin, search, index) from security.json or change their passwords. The future, not yet released, versions 9.11.0 and 10.1.0 will not be vulnerable, and it will be enough to upgrade to solve the issue. Not affected: * Clusters where bin/solr auth enable was not used to bootstrap BasicAuth * Clusters where template users have been assigned strong passwords after bootstrap

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

2.84%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

-0.05 pp

From 2.89% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.84%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard5 products
  • solr-9< 9.11.0-r0
  • solr-9-iamguarded-compat< 9.11.0-r0
  • solr-fips-9All versions (No fix recorded)
  • solr-fips-9-iamguarded-compatAll versions (No fix recorded)
  • wso2isAll versions (No fix recorded)
Apache1 product
  • solr≥ 9.4.0, ≤ 9.10.1 | 10.0.0
Apache software foundation1 product
Org.apache.solr1 product
  • solr-core≥ 9.4.0, ≤ 9.10.1 | 10.0.0
Ubuntu1 product
  • lucene-solrAll versions (No fix recorded)

5 vendors · 9 products

References

9 links