CVE-2026-77508

LOWPre-NVD 3.53.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This low-severity CVE scores 3.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (16th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
3.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 3.5Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

Weblate is a web based localization tool. Prior to 2026.8, an authenticated user can change the account's primary email through PUT or PATCH requests to /api/users/{username}/ without verifying the new address, allowing a later team invitation for that address to be accepted without access to the intended recipient's mailbox. This issue is fixed in version 2026.8.

CVSS v3
3.5
EG Score
3.5LOWmedium confidence
EG Risk
16
EG Risk 16/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity35% × 45%
The EG Score, 3.5 of 10.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: The CVE record names the fixed release. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
16th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

The CVE record names the fixed release. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 26, 2026

Last Modified

September 9, 2026

References (2)

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 39× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 3 repeat rows among the latest 65 are merged into the row they repeat.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  2. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  3. 2026-10-12 15:37 UTCEG score recompute
  4. 2026-10-11 19:23 UTCEG score recompute
  5. 2026-10-11 16:39 UTCEG score recompute
  6. 2026-10-11 13:58 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  9. 2026-10-10 11:02 UTCEG score recompute
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  11. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  13. 2026-10-07 09:06 UTCEG score recompute
  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  15. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 15th percentile
  16. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 15th percentile
  17. 2026-10-04 07:44 UTCEG score recompute
  18. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 15th percentile
  19. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 15th percentile
  20. 2026-10-01 06:25 UTCEG score recompute
  21. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.3% · 15th percentile
  22. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.3% · 15th percentile
  23. 2026-09-28 05:07 UTCEG score recompute
  24. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 15th percentile
  25. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 15th percentile
Show 37 more
  1. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.3% · 15th percentile
  2. 2026-09-25 03:48 UTCEG score recompute
  3. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.3% · 15th percentile
  4. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  5. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  6. 2026-09-22 02:30 UTCEG score recompute
  7. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  8. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  9. 2026-09-19 01:10 UTCEG score recompute
  10. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  11. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  12. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  13. 2026-09-15 23:50 UTCEG score recompute
  14. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  15. 2026-09-12 22:32 UTCEG score recompute
  16. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  17. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  18. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  19. 2026-09-09 00:48 UTCEG score recompute
  20. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  21. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  22. 2026-09-05 21:50 UTCEG score recompute
  23. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  24. 2026-09-02 20:32 UTCEG score recompute
  25. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  26. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  27. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  28. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  29. 2026-08-30 18:49 UTCEG score recompute
  30. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  31. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  32. 2026-08-27 17:30 UTCEG score recompute
  33. 2026-08-27 17:07 UTCEG score recompute
  34. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  35. 2026-08-26 20:25 UTCEG score recompute
  36. 2026-08-26 20:07 UTCEG score recomputeFirst assessed: 3.5 LOW
  37. 2026-08-26 20:06 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-77508?
CVE-2026-77508 is a low-severity vulnerability; its CVE record was published on August 26, 2026. Weblate is a web based localization tool. Prior to 2026.8, an authenticated user can change the account's primary email through PUT or PATCH requests to /api/users/{username}/ without verifying the new address, allowing a later team invitation for that address to be accepted without access to the…
When was the CVE record for CVE-2026-77508 published?
The CVE record for CVE-2026-77508 was published on August 26, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 9, 2026; the record at its source may have been updated since.
Is CVE-2026-77508 actively exploited?
CVE-2026-77508 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (16th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-77508?
CVE-2026-77508 has a CVSS base score of 3.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-77508?
The CVE record for CVE-2026-77508 names the fix: "This issue is fixed in version 2026.8."

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